(18) باب جَامِعِ صَلاَةِ اللَّيْلِ وَمَنْ نَامَ عَنْهُ أَوْ مَرِضَ
Sa'd b. Hisham reported:
I went to 'Abdullah b. 'Abbas and asked him about the Witr prayer, and the rest of the hadith is the same as recorded in this event. She (Hadrat 'A'isha) said: Who is that Hisham? I said: Son of 'Amir. She said: What a fine man 'Amir was! He died as a martyr in the Battle of Uhud.
Reference: Sahih Muslim 746 c
In-book reference: Book 6, Hadith 170
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1625