The works of Ādi Śaṅkarācārya

Sanatsujātīyam

p. 281

p. 281

ऋषयश्च महाभागा ब्रह्मचर्येण चाभवन् ॥ १५ ॥

In plain words

The seers too, the greatly blessed ones — brahmacarya is how they became what they were.

Close to the Sanskrit

And the ṛṣis, greatly blessed, came to be by brahmacarya as well.