Mahabharata 13.132.49
निर्दयः सर्वभूतानां नित्यमुद्वेगकारकःअपि कीटपिपीलानामशरण्यः सुनिर्घृणः
nirdayaḥ sarvabhūtānāṃ nityamudvegakārakaḥapi kīṭapipīlānāmaśaraṇyaḥ sunirghṛṇaḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book