Ramayana
न स क्षमः कोपयितुं यः प्रसाद्यः पुनर्भवेत् । पूर्वोपकारं स्मरता कृतज्ञेन विशेषतः ॥ ४-३२-२०
'He who deserves propitiation, should not be offended, more so by a grateful man, remembering the help received by him earlier. ॥ 4-32-20॥
english translation
na sa kSamaH kopayituM yaH prasAdyaH punarbhavet । pUrvopakAraM smaratA kRtajJena vizeSataH ॥ 4-32-20
hk transliteration by Sanscript