Valmiki Ramayana Kishkindha Kanda Sarga 31 Shloka 3
Original Shlokaमतिक्षयाद्ग्राम्यसुखेषु सक्त स्तव प्रसादाप्रतिकारबुद्धिः। हतोऽग्रजं पश्यतु वीर तस्य न राज्यमेवं विगुणस्य देयम्4.31.3।।
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वीर hero, तव your, प्रसादाप्रतिकारबुद्धिः ingratitude to the benefactor, मतिक्षयात् mind grown smaller, ग्राम्यसुखेषु in rustic, vulgar pleasures, सक्तः engaged, हतः killed, अग्रजम् elder brother, तस्य his, पश्यतु let him see, एवम् that way, विगुणस्य desttitute of virtues, राज्यम् kingdom, न देयम् not to be given.
'O hero he is too ungrateful to return the favour done to him, Engaged in rustic, vulgar pleasures, he is not thinking of it. Let him see his killed elder brother. Kingship should not be given to an individual who is a destitute of virtues.