Śaṅkaraon Brahma Sūtra 4.4.9

For this very same reason, i.e. owing to the fact of the will of the released person not being barren, he who knows has no other lord over himself. For not even an ordinary person when forming wishes will, if he can Iiclp it, wish himself to be subject to another master. And scripture also declare.s this when saying, ‘Those who depart from hence, after having discovered the Self and those true desires, for them there is freedom in all worlds’ [Kh, Up. VIII, 1 6). ,