चतुर्युगाख्यान (Caturyuga-Ākhyāna) — Yuga-wise Origins and Measurements of Beings
मैथुनस्यासमाचारो न चिन्ता नानुजल्पनम् / निवृत्तिर्ब्रह्मचर्यं तदच्छिद्रं तप उच्यते
maithunasyāsamācāro na cintā nānujalpanam / nivṛttirbrahmacaryaṃ tadacchidraṃ tapa ucyate
To abstain from sexual union, to be free from anxious thought, and to avoid idle speech—this withdrawal is brahmacarya; it is called austerity without breach.