Sa'd bin Hisham bin 'Amir سعد بن هشام بن عامر · The Book of Prayer - Travellers

Is there not for you a model pattern in me? And when they narrated this to him (Sa'd b. Hisham), he returned to his wife, though he had divorced her and made (people) witness to his reconciliation. He then came to Ibn 'Abbas and asked him about the Witr of the Messenger of Allah (ﷺ). Ibn 'Abbas said: Should I not lead you to one who knows best amongst the people of the world about the Witr of the Messenger…

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.