Sahih Muslim Book - 22, Hadith - 3986

قَالَ مُسْلِمٌ وَرَوَى اللَّيْثُ بْنُ سَعْدٍ حَدَّثَنِى جَعْفَرُ بْنُ رَبِيعَةَ عَنْ عَبْدِ الرَّحْمَنِ بْنِ هُرْمُزَ عَنْ عَبْدِ اللَّهِ بْنِ كَعْبِ بْنِ مَالِكٍ عَنْ كَعْبِ بْنِ مَالِكٍ أَنَّهُ كَانَ لَهُ مَالٌ عَلَى عَبْدِ اللَّهِ بْنِ أَبِى حَدْرَدٍ الأَسْلَمِىِّ فَلَقِيَهُ فَلَزِمَهُ فَتَكَلَّمَا حَتَّى ارْتَفَعَتْ أَصْوَاتُهُمَا فَمَرَّ بِهِمَا رَسُولُ اللَّهِ -صلى الله عليه وسلم- فَقَالَ « يَا كَعْبُ ». فَأَشَارَ بِيَدِهِ كَأَنَّهُ يَقُولُ النِّصْفَ فَأَخَذَ نِصْفًا مِمَّا عَلَيْهِ وَتَرَكَ نِصْفًا.

It was narrated from Ka'b bin Malik that he was owed money by 'Abdullah bin Abl Hadrad Al-Aslami. He met him and pressured him to pay it, and they spoke until their voices became loud. The Messenger of Allah (s.a.w) passed by them and said: "O Ka'b!" and gestured with his hand as if he was telling him, 'Half.' So he took half of what was owed him and waive the rest.