An-Nisa' - 4:148

لاَّ يُحِبُّ اللّهُ الْجَهْرَ بِالسُّوَءِ مِنَ الْقَوْلِ إِلاَّ مَن ظُلِمَ وَكَانَ اللّهُ سَمِيعًا عَلِيمًا
[4:148]
Allah does not love the public utterance of hurtful speech unless (it be) by one to whom injustice has been done; and Allah is Hearing, Knowing.
Allah loveth not that evil should be noised abroad in public speech, except where injustice hath been done; for Allah is He who heareth and knoweth all things.
Allah loveth not the utterance of harsh speech save by one who hath been wronged. Allah is ever Hearer, Knower.