Dhp 312

yaṃ kiñci sithilaṃ kammaṃ, saṃkiliṭṭhañ'ca yaṃ vataṃ, saṅkassaraṃ brahmacariyaṃ, na taṃ hoti mahapphalaṃ.

Ud 5.5

addasā kho āyasmā mahāmoggallāno taṃ puggalaṃ dussīlaṃ pāpadhammaṃ asuciṃ saṅkassarasamācāraṃ paṭicchannakamm'antaṃ asamaṇaṃ samaṇapaṭiññaṃ abrahmacāriṃ brahmacāripaṭiññaṃ antopūtiṃ avassutaṃ kasambujātaṃ majjhe bhikkhusaṅghassa nisinnaṃ