Narrated Muadh ibn Jabal: Abu Musa said: Muadh came to me when I was in the Yemen. A man who was Jew embraced Islam and then retreated from Islam. When Muadh came, he said: I will not come down from my mount until he is killed. He was then killed. One of them said: He was asked to repent before that.
Hadith Referenceسنن ابي داود / كتاب الحدود / 4355
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده حسن, وانظر الحديث السابق (4354)