On one occasion the Blessed One was living at Savatthi in Jeta's Grove, Anathapindika's Park. Then the carpenter Pancakanga addressed a certain man thus: "Come, good man, go to the venerable Anuruddha, pay homage in my name with your head at his feet, and say: 'Venerable sir, the carpenter Pancakanga pays homage with his head at the venerable Anuruddha's feet and says: "Venerable sir, let the venerable Anuruddha with three others consent to accept tomorrow's meal from the carpenter Pancakanga; and let the venerable Anuruddha arrive punctually as the carpenter Pancakanga is very busy and has much work to do for the king.'"" "Yes, sir," that man replied, and he went to the venerable Anuruddha and delivered his message. The venerable Anuruddha consented in silence.
The next morning, Venerable Anuruddha got dressed, and took his bowl and outer robe, he went to the carpenter Pancakanga's house and sat down on a seat made ready. Then, with his own hands, the carpenter Pancakanga served and satisfied the venerable Anuruddha with the various kinds of good food. Then, when the venerable Anuruddha had eaten and had withdrawn his hand from his bowl, the carpenter Pancakanga took a low seat, sat down at one side, and said to the venerable Anuruddha:"Here, venerable sir, elder bhikkhus have come to me and said: 'Householder, develop the immeasurable deliverance of mind'; and some elders have said: 'Householder, develop the exalted deliverance of mind.' Venerable sir, the immeasurable deliverance of mind and the exalted deliverance of mind are these states different in meaning and different in name, or are they one in meaning and different only in name?"
Venerable Anuruddha: "Explain it as you see it, householder. Afterwards it will be cleared up for you."
"Venerable sir, I think thus: the immeasurable deliverance of mind and the exalted deliverance of mind - these states are one in meaning and different only in name." Venerable Anuruddha: "Householder, the immeasurable deliverance of mind and the exalted deliverance of mind - these states are different in meaning and different in name. And it should be understood as follows how these states are different in meaning and different in name." "What, householder, is the immeasurable deliverance of mind? Here a bhikkhu abides pervading one quarter with a mind imbued with loving-kindness, likewise the second, likewise the third, likewise the fourth; so above, below, around, and everywhere, and to all as to himself, he abides pervading the all encompassing world with a mind imbued with loving-kindness, abundant, exalted, immeasurable, without hostility and without ill will. He abides pervading one quarter with a mind imbued with compassion...He abides pervading one quarter with a mind imbued with appreciative joy...He abides pervading one quarter with a mind imbued with equanimity.. .abundant, exalted, immeasurable, without hostility and without ill will. This is called the immeasurable deliverance of mind."
"And what, householder, is the exalted deliverance of mind? Here a bhikkhu abides resolved upon an area the size of the root of one tree, pervading it as exalted: this is called the exalted deliverance of mind. Here a bhikkhu abides resolved upon an area the size of the roots of two or three trees, pervading it as exalted: this too is called the exalted deliverance of mind. Here a bhikkhu abides resolved upon an area the size of one village, pervading it as exalted.....an area the size of two or three villages...an area the size of one major kingdom... an area the size of two or three major kingdoms...an area the size of the earth bounded by the ocean, pervading it as exalted: this too is called the exalted deliverance of mind. It is in this way, householder, that it can be understood how these states are different in meaning and different in name. "
"There are, householder, these four kinds of reappearance[in a future state of being. What four? 1. Here someone abides resolved upon and pervading limited radiance'; on the dissolution of the body, after death, he reappears in the company of the gods of Limited Radiance. 2. Here someone abides resolved upon and pervading 'immeasurable radiance'; on the dissolution of the body, after death, he reappears in the company of the gods of Immeasurable Radiance. 3. Here someone abides resolved upon and pervading 'defiled radiance'; on the dissolution of the body, after death, he reappears in the company of the gods of Defiled Radiance. 4. Here someone abides resolved upon and pervading 'pure radiance'; on the dissolution of the body, after death, he reappears in the company of the gods of Pure Radiance. These are the four kinds of reappearance [in a future state of] being."
"There is an occasion, householder, when those deities assemble in one place. When they have assembled in one place, a difference in their color can be discerned but no difference in their radiance. Just as, if a man were to bring several oil-lamps into a house, a difference in the flames of the lamps might be discerned but no difference in their radiance."
"There is an occasion, householder, when those deities disperse from there. When they have dispersed, a difference in their colors can be discerned and also a difference in their radiance. Just as, if the man were to remove those several oil-lamps from that house, a difference might be discerned in the flames of the lamps and also a difference in their radiance It does not occur to those deities: 'This life of ours is permanent, everlasting, and eternal', yet wherever those deities settle down, there they find delight. Just as, when flies are being carried along on a carrying-pole or on a basket, it does not occur to them: 'This life of ours is permanent, everlasting, or eternal,' yet wherever those flies settle down, there they find deligh"
When this was said, the venerable Abhiya Kaccana said to the venerable Anuruddha: "Good, venerable Anuruddha, yet I have something further to ask: Are all those radiant ones deities of Limited Radiance, or are some of them deities of Immeasurable Radiance?"
"By reason of the factor responsible for rebirth, friend Kaccana, some are deities of Limited Radiance, some deities of Immeasurable Radiance." "Venerable Anuruddha, what is the cause and reason why among those deities that have reappeared in a single order of gods, some are deities of Limited Radiance, some deities of Immeasurable Radiance?" Venerable Anuruddha: "As to that, friend Kaccana, I shall ask you a question in return. Answer it as you choose. What do you think, friend Kaccana? When one bhikkhu abides resolved upon an area the size of the root of one tree, pervading it as exalted, and another bhikkhu abides resolved upon the area the size of the roots of two or three trees, pervading it as exalted - which of these types of mental development is more exalted?" Kaccana: "The second, venerable sir."
Venerable Anuruddha: "What do you think, friend Kaccana? When one bhikkhu abides resolved upon an area the size of the roots of two or three trees, pervading it as exalted, and another bhikkhu abides resolved upon an area the size of one village, pervading it as exalted...an area the size of one village and an area the size of two or three villages...an area the size of two or three villages and an area the size of one major kingdom...an area the size of one major kingdom and an area the size of two or three major kingdoms...an area the size of two or three major kingdoms and an area the size of the earth bounded by the ocean, pervading it as exalted - which of these two types of mental development is more exalted?" Kaccana: "The second, venerable sir."
Venerable Anuruddha: "This is the cause and reason, friend Kaccana, why among those deities that have reappeared in a single order of gods, some are deities of Limited Radiance, some deities of Immeasurable Radiance." Kaccana: "Good, venerable Anuruddha, yet I have something further to ask: Are all those radiant ones deities of Defiled Radiance, or are some of them deities of Pure Radiance?" Venerable Anuruddha: "By reason of the factor responsible for rebirth, friend Kaccana, some are deities of Defiled Radiance, some deities of Pure Radiance."
Kaccana: "Venerable Anuruddha, what is the cause and reason why among those deities that have reappeared in a single order of gods, some are deities of Defiled Radiance, some deities of Pure Radiance?" Venerable Anuruddha: "As to that, friend Kaccana, I shall give a simile, for some wise men here understand the meaning of a statement by means of a simile. Suppose an oil-lamp is burning with impure oil and an impure wick; because of the impurity of its oil and its wick it burns dimly. So too, here a bhikkhu abides resolved upon and pervading an area with a defiled radiance. His bodily inertia has not fully subsided, his sloth and torpor have not been fully eliminated, his restlessness and remorse have not been fully removed; because of this he meditates, as it were, dimly. On the dissolution of the body, after death, he reappears in the company of the gods of Defiled Radiance. Suppose an oil-lamp is burning with pure oil and a pure wick; because of the purity of its oil and its wick it does not burn dimly. So too, here a bhikkhu abides resolved upon and pervading an area with a pure radiance. His bodily inertia has fully subsided, his sloth and torpor have been fully eliminated, his restlessness and remorse have been fully removed; because of this he meditates, as it were, brightly. On the dissolution of the body, after death, he reappears in the company of the gods of Pure Radiance."
When this was said, the venerable Abhiya Kaccana said to the venerable Anuruddha: "Good, venerable Anuruddha. The venerable Anuruddha does not say: 'Thus have I heard' or 'It should be thus.' Rather, the venerable Anuruddha says: 'These gods are thus and those gods are such.' It occurs to me, venerable sir, that the venerable Anuruddha certainly has associated with those deities and talked with them and held conversations with them." Venerable Anuruddha: "Certainly, friend Kaccana, your words are offensive and discourteous, but still I will answer you. Over a long time I have associated with those deities and talked with them and held conversations with them."
When this was said, the venerable Abhiya Kaccana said to the carpenter Pancakanga: "It is a gain for you, householder, it is a great gain for you that you have abandoned your state of doubt and have had the opportunity to hear this discourse on the Dhamma."
In summary, Venerable Anuruddha explains the difference between 'boundless' freedom of mind (immeasurable deliverance of mind) and 'wide-spread' freedom of mind (exalted deliverance of mind) and then answers further questions concerning the manner in which 'wide-spread' freedom of mind manifests it's results in rebirth in a deva world.
References: 1. www.accesstoinsight.org 2. https://suttacentral.net/ 3. The middle length discourses of the Buddha (Bhikkhu Bodhi)