MN 132 Anandabhaddekaratta Sutta: Ananda and One Fortunate Attachment
Thus have i heard.
On one occasion the Blessed One was living at Savatthi in Jeta's Grove, Anathapindika's Park. Now on that occasion the venerable Ananda was instructing, urging, rousing, and encouraging the bhikkhus with talk on the Dhamma in the assembly hall. He was reciting the summary and exposition of "One Who Has One Fortunate Attachment."
Then, in the evening, the Blessed One rose from meditation and went to the assembly hall. He sat down on a seat made ready and asked the bhikkhus: "Bhikkhus, who has been instructing, urging, rousing, and encouraging the bhikkhus with talk on the Dhamma in the assembly hall? Who has been reciting the summary and exposition of 'One Who has One Fortunate Attachment'?" They replied: "It was the venerable Ananda, venerable sir."
Then the Blessed One asked the venerable Ananda: "Ananda, how were you instructing, urging, rousing, and encouraging the bhikkhus with talk on the Dhamma, and reciting the summary and exposition of 'One Who Has One Fortunate Attachment'?" Ananda: "I was doing so thus, venerable sir: [191] 'Let not a person revive the past... (Repeat the whole of the last sutta MN 131) Who has one fortunate attachment.'
Buddha:"Good, good, Ananda! It is good that you were instructing, urging, rousing, and encouraging the bhikkhus with talk on the Dhamma thus, and reciting the summary and exposition of 'One Who Has One Fortunate Attachment' thus: "Let not a person revive the past... (Repeat the whole of the last sutta MN 131) Who has one fortunate attachment."
That is what the Blessed One said. The venerable Ananda was satisfied and delighted in the Blessed One's words.
In summary, Venerable Ananda repeats MN 131 the sutta in which one does not hanker after the past, yearn for the future, and in which one remains detached among things present. Buddha praised him for instructing the monks on this sutta.
References: 1. www.accesstoinsight.org 2. https://suttacentral.net/ 3. The Middle discourses of the Buddha (Bhikkhu Bodhi)