Shiva Purana
उपकारं परित्यज्य ह्यपकारं समीहसे॥ नैतद्युक्तं त्वयाद्यैव क्रियते त्यज चापलम् ॥ १९ ॥
Unmindful of his help to you, you wish him harm. This does not behove you. Eschew this fickleness;
english translation
upakAraM parityajya hyapakAraM samIhase॥ naitadyuktaM tvayAdyaiva kriyate tyaja cApalam ॥ 19 ॥
hk transliteration by Sanscript