Manusmriti

siva.sh/manusmriti/12/29

यत् तु स्यान् मोहसंयुक्तमव्यक्तं विषयात्मकम् । अप्रतर्क्यमविज्ञेयं तमस्तदुपधारयेत् ॥ २९ ॥

sanskrit

What is coupled with delusion, what has the character of an undiscernible mass, what cannot be fathomed by reasoning, what cannot be fully known, one must consider (as the quality of) Darkness.

english translation

yat tu syAn mohasaMyuktamavyaktaM viSayAtmakam | apratarkyamavijJeyaM tamastadupadhArayet || 29 ||

hk transliteration by Sanscript