The Long Āgama Sūtra 3.42

3.42

「時，大典尊聞此偈已，復自念言：『梵童子所說臭穢之義我今已解，但在家者無由得除，今我寧可捨世出家，剃除鬚髮，法服修道耶！』

“‘After hearing this verse, Great Govinda again thought to himself, “The meaning of pollution that Brahmā Kumāra has explained for me can’t be removed by someone living at home. Now, I’d better renounce the world, leave home, cut off my hair and beard, put on the Dharma clothes, and cultivate the path!”