abhava pratyaya alambana tamo vrttir nidra
Yoga Sutras of Patanjali, 1.10
अभावप्रत्ययाअलम्बना तमोवृत्तिर्निद्र
nidra = sleep
abhava = non-existent
pratyaya = impression
alambana = based (on)
tamo (tamas) = void, inertia, darkness
vrttir = thought
I love sleeping people – they look so calm and at peace.
The translations I read described this as being about deep, dreamless sleep.
It’s interesting that it gets included as a “thought”. I find sleep fascinating – it’s almost as mysterious as infinity and thinking about the edge of the cosmos.
Grace Kishino 
wait, I’m looking for my pillow now … time for a sleep!
Inner infinity, mortality and age make you think about that Grace. R x
Lovely. Zzzzzzzz!