Sunan an-Nasa'i 2460
It was narrated that 'Abdur-Rahman bin Hilal said:
"Jarir said: 'Some Bedouin people came to the Prephet and said:  O Messenger of Allah, some of your Zakah collectors come to us and they are unfair. He said: Keep your Zakah collectors happy. They said: Even if they are unfair? He said: Keep your Zakah collectors happy. Then they said: Even if they are unfair. He said: Keep your Zakah collectors happy. Jarir said: No Zakah collector left me, since I heard this from the Messenger of Allah but he was pleased with me."[1]
أَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، وَمُحَمَّدُ بْنُ بَشَّارٍ، - وَاللَّفْظُ لَهُ - قَالاَ حَدَّثَنَا يَحْيَى، عَنْ مُحَمَّدِ بْنِ أَبِي إِسْمَاعِيلَ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ هِلاَلٍ، قَالَ قَالَ جَرِيرٌ أَتَى النَّبِيَّ صلى الله عليه وسلم نَاسٌ مِنَ الأَعْرَابِ فَقَالُوا يَا رَسُولَ اللَّهِ يَأْتِينَا نَاسٌ مِنْ مُصَدِّقِيكَ يَظْلِمُونَ ‏.‏ قَالَ ‏"‏ أَرْضُوا مُصَدِّقِيكُمْ ‏"‏ ‏.‏ قَالُوا وَإِنْ ظَلَمَ قَالَ ‏"‏ أَرْضُوا مُصَدِّقِيكُمْ ‏"‏ ‏.‏ ثُمَّ قَالُوا وَإِنْ ظَلَمَ قَالَ ‏"‏ أَرْضُوا مُصَدِّقِيكُمْ ‏"‏ ‏.‏ قَالَ جَرِيرٌ فَمَا صَدَرَ عَنِّي مُصَدِّقٌ مُنْذُ سَمِعْتُ مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم إِلاَّ وَهُوَ رَاضٍ ‏.‏