mokṣasaṃnyāsayoga - Verse śloka 39
śloka 39
yadagre cānubandhe ca sukhaṃ mohanamātmanaḥ |
nidrālasyapramādotthaṃ tattāmasamudāhṛtam ||18-39||
Translation
That happiness which deludes the self (the person) both in the beginning and in the end—that happiness arising from sleep, sloth and heedlessness is called Tamasic.