Ramayana
धर्मलोपो महांस्तावत्कृते ह्यप्रतिकुर्वतः । अर्थलोपश्च मित्रस्य नाशे गुणवतो महान् ॥ ४-३३-४७
'Dharma is violated when we help not one who has helped. Loss of a virtuous friend leads to great loss of wealth. It results in destruction. ॥ 4-33-47॥
english translation
dharmalopo mahAMstAvatkRte hyapratikurvataH । arthalopazca mitrasya nAze guNavato mahAn ॥ 4-33-47
hk transliteration by Sanscript