Ramayana
प्रतिग्रहो ऽयं भगवन्ब्राह्मणस्याविगर्हितः । गृह्णीयां क्षत्रियो ऽहं वै कथं ब्राह्मणपुङ्गव ॥ 7-76-35 ॥
"This acceptance of a gift, O blessed one, is not blameworthy for a Brahmana; but how am I, being a Kshatriya, to accept it, O bull among Brahmanas?
english translation