Manusmriti
यो ह्यस्य धर्ममाचष्टे यश्चैवादिशति व्रतम् । सोऽसंवृतं नाम तमः सह तेनैव मज्जति ॥ ८१ ॥
For he who explains the sacred law (to a Sudra) or dictates to him a penance, will sink together with that (man) into the hell (called) Asamvrita.
english translation
yo hyasya dharmamAcaSTe yazcaivAdizati vratam । so'saMvRtaM nAma tamaH saha tenaiva majjati ॥ 81 ॥
hk transliteration by Sanscript