Mahabharata 13.130.10

वीरासनगतैर्नित्यं स्थण्डिले शयनैस्तथाशीतयोगोऽग्नियोगश्च चर्तव्यो धर्मबुद्धिभिः

vīrāsanagatairnityaṃ sthaṇḍile śayanaistathāśītayogo'gniyogaśca cartavyo dharmabuddhibhiḥ

Our plain-language meaning of this verse is waiting for scholar review.