Mahabharata 16.8.28
अलुप्तधर्मस्तं धर्मं कारयित्वा स फल्गुनःजगाम वृष्णयो यत्र विनष्टा भरतर्षभ
aluptadharmastaṃ dharmaṃ kārayitvā sa phalgunaḥjagāma vṛṣṇayo yatra vinaṣṭā bharatarṣabha
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book