Shiva Purana
यैः पुनर्विदितं तत्त्वं ते मुक्ता मोचयन्त्यपि ॥ तत्त्वहीने कुतो बोधः कुतो ह्यात्मपरिग्रहः ॥ ३९ ॥
Those by whom this principle is known are liberated and can liberate others. There can be no enlightenment, no realisation of the self in one who is devoid of principles.
english translation
yaiH punarviditaM tattvaM te muktA mocayantyapi ॥ tattvahIne kuto bodhaH kuto hyAtmaparigrahaH ॥ 39 ॥
hk transliteration by Sanscript