Mahapadanasutta 1.1.3

1.1.3

Atha kho sambahulānaṃ bhikkhūnaṃ pacchābhattaṃ piṇḍapātapaṭikkantānaṃ karerimaṇḍalamāḷe sannisinnānaṃ sannipatitānaṃ pubbenivāsapaṭisaṃyuttā dhammī kathā udapādi:

Then after the meal, on return from almsround, several mendicants sat together in the pavilion by the kareri tree and this Dhamma talk on the subject of past lives came up among them,