Valmiki Ramayana Ayodhya Kanda Sarga 66 Shloka 6

लुब्ध: a greedy man, किम्पाकम् a poisonous fruit of bad taste, भक्षयन्निव as if one has eaten, दोषान् faults, न बुध्यते does not know, कुब्जानिमित्तम् on account of the hunchback, कैकेय्या by Kaikeyi, राघवाणाम् of Raghus, कुलम् race, हतम् is destroyed.

Like a greedy man who eats the (poisonous) kimpaka fruit without realising the defects of the fruit, Kaikeyi has destroyed the Raghu race on account of the hunchback (Manthara).