Valmiki Ramayana Ayodhya Kanda Sarga 97 Shloka 4
Original Shlokaयद्द्रव्यं बान्धवानां वा मित्राणां वा क्षये भवेत्। नाहं तत्प्रतिगृह्णीयां भक्षान्विषकृतानिव।।2.97.4।।
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यत् द्रव्यम् the wealth, बान्धवानां वा of kith and kin, मित्राणां वा or friends', क्षये भवेत् is obtaind through destruction, तत् that one, अहम् I, विषकृतान् prepared with poison, भक्षान् इव like eatables, न प्रतिगृह्णीयाम् I shall not accept.
I shall never accept any wealth obtained by destroying kith and kin or friends which is akin to taking food prepared with poison.