Pātimokkhasaṁvarasutta
Atha kho aññataro bhikkhu yena bhagavā tenupasaṅkami …pe… ekamantaṁ nisinno kho so bhikkhu bhagavantaṁ etadavoca:
Restraint in the Monastic Code
Then a mendicant went up to the Buddha, bowed, sat down to one side, and said to him: