Hadith 648
قد أصابه فى رأسه أذى فحلق فأمره النبى صلى الله عليه وسلم أن يهدى هديا بقرة
"When Hazrat Ka'b bin Ujrah (may Allah be pleased with him) had pain in his head, he shaved his head. Upon this, the Noble Prophet (peace and blessings be upon him) ordered him to sacrifice a cow."
