Sahih al-Bukhari 4643
Narrated `Abdullah bin AzZubair:
(The Verse) "Hold to forgiveness; command what is right..." was revealed by Allah except in 
connection with the character of the people.
حَدَّثَنَا يَحْيَى، حَدَّثَنَا وَكِيعٌ، عَنْ هِشَامٍ، عَنْ أَبِيهِ، عَنْ عَبْدِ اللَّهِ بْنِ الزُّبَيْرِ، ‏{‏خُذِ الْعَفْوَ وَأْمُرْ بِالْعُرْفِ‏}‏ قَالَ مَا أَنْزَلَ اللَّهُ إِلاَّ فِي أَخْلاَقِ النَّاسِ‏.‏