Valmiki Ramayana Yuddha Kanda Sarga 18 Shloka 28

सः he, भयाद्वा: from fear, मोहाद्वा: from delusion, कामाद्वापि: even from desire, स्वया: his own, शक्त्वा: capacity, यथासत्त्वम् accordingly, नरक्षतिचेत् if he does not protect, तत् that, लोकगर्हितम् censured by the world, पापम् sin.

"If one does not protect, or give refuge, according to his capacity out of fear, desire (to gain) or delusion, the sin acquired by him will be censured by the world."