The works of Ādi Śaṅkarācārya

Sanatsujātīyam

p. 254

p. 254

श्रेयांस्तु षड्विधस्त्यागस्तृतीयस्तत्र दुष्करः ।

In plain words

But the better course is tyāga in its six forms — and of those six, the third is the hard one.

Close to the Sanskrit

But better is the sixfold renunciation; among those, the third is hard to do.