Upaḍḍhasutta
Evaṁ me sutaṁ— ekaṁ samayaṁ bhagavā sakyesu viharati nagarakaṁ nāma sakyānaṁ nigamo. Atha kho āyasmā ānando yena bhagavā tenupasaṅkami; upasaṅkamitvā bhagavantaṁ abhivādetvā ekamantaṁ nisīdi. Ekamantaṁ nisinno kho āyasmā ānando bhagavantaṁ etadavoca: “upaḍḍhamidaṁ, bhante, brahmacariyaṁ, yadidaṁ—kalyāṇamittatā kalyāṇasahāyatā kalyāṇasampavaṅkatā”ti.
Half the Spiritual Life
So I have heard. At one time the Buddha was staying in the land of the Sakyans, where they have a town named Townsville. Then Venerable Ānanda went up to the Buddha, bowed, sat down to one side, and said to him: “Sir, good friends, companions, and associates are half the spiritual life.”