Mahabharata 13.130.22

महेश्वर उवाच · maheśvara uvāca

स्वैरिणस्तापसा देवि सर्वे दारविहारिणःतेषां मौण्ड्यं कषायश्च वासरात्रिश्च कारणम्

svairiṇastāpasā devi sarve dāravihāriṇaḥteṣāṃ mauṇḍyaṃ kaṣāyaśca vāsarātriśca kāraṇam

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