Malik related to me from Ibn Shihab that Abu Umama ibn Sahl ibn
Hunayf said, ''Amir ibn Rabia saw Sahl ibn Hunayf doing a ghusl and
said, 'I have not seen the like of what I see today, not even the skin
of 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, was
approached and it was said, 'Messenger of Allah, can you do anything
about 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 him and 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 Allah bless 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, and there was nothing wrong with him."
He continued, "The Messenger of Allah, may Allah bless him and 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 Allah bless 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, and there was nothing wrong with him."
Muwatta Malik Book 50, Hadith 2