She also was breathing very heavily, and she did not know the factual remedy for the painful situation. Not finding any remedy, she said to her son: My dear son, don’t wish for anything inauspicious for others. Anyone who inflicts pains upon others suffers himself from that pain.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
दीर्घं श्वसन्ती वृजिनस्य पार- मपश्यती बालकमाह बाला । मामङ्गलं तात परेषु मंस्था भुङ्क्ते जनो यत्परदुःखदस्तत्
dīrghaṃ śvasantī vṛjinasya pāra- mapaśyatī bālakamāha bālā | māmaṅgalaṃ tāta pareṣu maṃsthā bhuṅkte jano yatparaduḥkhadastat
SB 4.8.17