Vijnana Bhairava Tantra
परशिष्ये खले क्रूरे अभक्ते गुरुपादयोः । निर्विकल्पमतीनां तु वीराणां उन्नतात्मनाम् ॥ १५८ ॥
These teachings should not be disclosed) to other disciples, to those who are evil and cruel, or to those who have not surrendered to the feet of the guru. (They should only be revealed) to advanced souls, who are self-controlled and whose minds arc lice of vikalpas.
english translation
paraziSye khale krUre abhakte gurupAdayoH । nirvikalpamatInAM tu vIrANAM unnatAtmanAm ॥ 158 ॥
hk transliteration by Sanscript