Mahabharata 12.138.65

मृदुना सुमृदुं हन्ति मृदुना हन्ति दारुणम्नासाध्यं मृदुना किंचित्तस्मात्तीक्ष्णतरं मृदु

mṛdunā sumṛduṃ hanti mṛdunā hanti dāruṇamnāsādhyaṃ mṛdunā kiṃcittasmāttīkṣṇataraṃ mṛdu

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