Manusmriti
यं वदन्ति तमोभूता मूर्खा धर्ममतद्विदः । तत्पापं शतधा भूत्वा तद्वक्तॄननुगच्छति ॥ ११५ ॥
The sin of him whom dunces, incarnations of Darkness, and unacquainted with the law, instruct (in his duty), falls, increased a hundredfold, on those who propound it.
english translation
yaM vadanti tamobhUtA mUrkhA dharmamatadvidaH । tatpApaM zatadhA bhUtvA tadvaktRRnanugacchati ॥ 115 ॥
hk transliteration by Sanscript