Hadith 6266
`Umar b. al-Khattab reported God's messenger as saying, "A man called Uwais will come to you from the Yemen leaving there only a mother. He had been afflicted by leprosy and made supplication to God who removed it all except to the extent of a dinar (or dirham). If any of you meet him let him ask forgiveness for you." In a version he told that he heard God's messenger say, "The best of the Followers will be a man called Uwais who has a mother and has been afflicted by leprosy. Tell him he must ask forgiveness for you." Muslim transmitted it.
عَن عمر بن الْخطاب أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: " إِنَّ رَجُلًا يَأْتِيكُمْ مِنَ الْيَمَنِ يُقَالُ لَهُ: أُوَيْسٌ لَا يَدَعُ بِالْيَمَنِ غَيْرَ أُمٍّ لَهُ قَدْ كَانَ بِهِ بَيَاضٌ فَدَعَا اللَّهَ فَأَذْهَبَهُ إِلَّا مَوْضِعَ الدِّينَارِ أَوِ الدِّرْهَمِ فَمَنْ لَقِيَهُ مِنْكُمْ فَلْيَسْتَغْفِرْ لَكُمْ " وَفِي رِوَايَةٍ قَالَ: سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسلم يَقُولُ: " إِنَّ خَيْرَ التَّابِعِينَ رَجُلٌ يُقَالُ لَهُ: أُويس وَله والدةٌ وَكَانَ بِهِ بَيَاض فَمُرُوهُ فليستغفر لكم ". رَوَاهُ مُسلم