وَحَدَّثَنِي مَالِكٌ، عَنِ ابْنِ شِهَابٍ، عَنْ أَبِي أُمَامَةَ بْنِ سَهْلِ بْنِ حُنَيْفٍ، أَنَّهُ قَالَ رَأَى عَامِرُ بْنُ رَبِيعَةَ سَهْلَ بْنَ حُنَيْفٍ يَغْتَسِلُ فَقَالَ مَا رَأَيْتُ كَالْيَوْمِ وَلاَ جِلْدَ مُخْبَأَةٍ ‏.‏ فَلُبِطَ سَهْلٌ فَأُتِيَ رَسُولُ اللَّهِ صلى الله عليه وسلم فَقِيلَ يَا رَسُولَ اللَّهِ هَلْ لَكَ فِي سَهْلِ بْنِ حُنَيْفٍ وَاللَّهِ مَا يَرْفَعُ رَأْسَهُ ‏.‏ فَقَالَ ‏"‏ هَلْ تَتَّهِمُونَ لَهُ أَحَدًا ‏"‏ قَالُوا نَتَّهِمُ عَامِرَ بْنَ رَبِيعَةَ ‏.‏ قَالَ فَدَعَا رَسُولُ اللَّهِ صلى الله عليه وسلم عَامِرًا فَتَغَيَّظَ عَلَيْهِ وَقَالَ ‏"‏ عَلاَمَ يَقْتُلُ أَحَدُكُمْ أَخَاهُ أَلاَّ بَرَّكْتَ اغْتَسِلْ لَهُ ‏"‏ ‏.‏ فَغَسَلَ عَامِرٌ وَجْهَهُ وَيَدَيْهِ وَمِرْفَقَيْهِ وَرُكْبَتَيْهِ وَأَطْرَافَ رِجْلَيْهِ وَدَاخِلَةَ إِزَارِهِ فِي قَدَحٍ ثُمَّ صُبَّ عَلَيْهِ فَرَاحَ سَهْلٌ مَعَ النَّاسِ لَيْسَ بِهِ بَأْسٌ ‏.‏

Malik related to me from Ibn Shihab that Abu Umama ibn Sahl ibnHunayf said, ''Amir ibn Rabia saw Sahl ibn Hunayf doing a ghusl andsaid, 'I have not seen the like of what I see today, not even the skinof a maiden who has never been out of doors.' Sahl fell to the ground.The Messenger of Allah, may Allah bless him and grant him peace, wasapproached and it was said, 'Messenger of Allah, can you do anythingabout Sahl ibn Hunayf? By Allah, he can not raise his head.' He said,'Do you suspect anyone of it?' They said, 'We suspect Amir ibn Rabia.'" He continued, "The Messenger of Allah, may Allah bless himand grant him peace, summoned Amir and was furious with him and said,'Why does one of you kill his brother? Why did you not say, "May Allahbless you?" Do ghusl for it.' Amir washed his face, hands, elbows,knees, the end of his feet, and inside his lower garment in a vessel.Then he poured it over him, and Sahl went off with the people, andthere was nothing wrong with him." Translation Not Available

Book Ref: Muwatta Imam Malik Book 50 Hadith 1715
Web Ref:  Muwatta Imam Malik Book 50 Hadith 2