Mahabharata 12.245.6
यथाहनि तथा रात्रौ यथा रात्रौ तथाहनिवशे तिष्ठति सत्त्वात्मा सततं योगयोगिनाम्
yathāhani tathā rātrau yathā rātrau tathāhanivaśe tiṣṭhati sattvātmā satataṃ yogayoginām
Our plain-language meaning of this verse is waiting for scholar review.
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