Mahāsīhanādasutta

mn12:3.1 Then Venerable Sāriputta robed up in the morning and, taking his bowl and robe, entered Vesālī for alms.

mn12:3.2 He heard what Sunakkhatta was saying.

mn12:3.6 Then he wandered for alms in Vesālī. After the meal, on his return from almsround, he went to the Buddha, bowed, sat down to one side, and told him what had happened.