Madhvaon Brahma Sūtra 3.4.17
Dvaita Vedānta
Sūtra
ऊर्ध्वरेतस्सुच शब्दे हि
ūrdhvaretassuca śabde hi
Sūtra translation
(And) initiation is permitted only of those who are bound to chastity (etc.), ; for in Scripture (it is prescribed thus).
By the fact that the wise obtain release in spite of doing anything as they please, it is not to be supposed that those whose conduct is unrestricted are entitled to wisdom. For the Mathara Sruti says, “ Such a great man as communicates this great secret to those that are bound to chastity, is not to be frequently found; or such a one by resorting to whom many others may become great”