[Machine] Abu Muslim al-Khawlani used to go around proclaiming Islam. He went to Muawiyah, so they said to him, "Abu Muslim is going around proclaiming Islam." So Muawiyah sent for him and said, "What are you doing, Abu Muslim? Are you proclaiming Islam?" He replied, "Yes." Abu Muslim then approached Muawiyah, who said to him, "If you do good, you will be rewarded with good, and if you do evil, you will be recompensed accordingly, O Muawiyah. If you were to administer justice to all the people on earth and then wrong just one person, your wrongdoing would outweigh your fairness."  

كَانَ أَبُو مُسْلِمٍ الْخَوْلَانِيُّ يَطُوفُ يَنْعَى الْإِسْلَامَ فَأَتَى مُعَاوِيَةُ فَقِيلَ لَهُ إِنَّ أَبَا مُسْلِمٍ يَطُوفُ يَنْعَى الْإِسْلَامَ فَأَرْسَلَ إِلَيْهِ فَقَالَ مَا تَصْنَعُ يَا أَبَا مُسْلِمٍ أَتَنْعَى الْإِسْلَامَ؟ قَالَ نَعَمْ فَأَقْبَلَ أَبُو مُسْلِمٍ عَلَى مُعَاوِيَةَ فَقَالَ «إِنْ عَمِلْتَ خَيْرًا جُزِيتَ خَيْرًا وَإِنْ عَمِلْتَ سُوءًا جُزِيتَ بِهِ يَا مُعَاوِيَةُ لَوْ عَدَلْتَ عَلَى أَهْلِ الْأَرْضِ كُلِّهِمْ ثُمَّ جُرْتَ عَلَى رَجُلٍ وَاحِدٍ لَمَالَ جَوْرُكَ بِعَدْلِكَ»