From The Book of Dua
Shaikh Hussain al-Awaaishah
Found on CalgaryIslam
Abu Musa reported, “When the Prophet sallallahu alaihi wa salaam had finished from the battle of Hunayn he sent Abu ‘Amir to lead an army to Atwas, and he sent me with him.
Abu ‘Amir was struck in his knee by an arrow which a man from Jusham had shot, and it lodged in his knee. I removed it, and water oozed out of it.
He said, ‘O son of my brother, convey my greetings to the Prophet sallallahu alaihi wa salaam, and request him to ask Allah’s forgiveness for me.’ He survived for a short while then died.
I returned and called on the Prophet sallallahu alaihi wa salaam at his house, and found him lying in a bed made of the stalks of date palm leaves knitted with ropes and on it there was bedding. The strings of the bed had left their marks on his back and sides. I told him about our and Abu ‘Amir’s news, and his request (to tell him to ask Allah’s forgiveness for him).
The Prophet asked for water, performed ablution, and raised his hands saying, ‘O Allah forgive Your servant Abu ‘Amir.’
I saw the whiteness of the Prophet’s underarm.
He continued, ‘O Allah make him on the Day of Resurrection superior to many of Your human creatures.’
I said, ‘Would you ask Allah’s forgiveness for me as well?’ He said, ‘O Allah, forgive the sins of Abdullah ibn Qays and admit him to a nice entrance on the Day of Resurrection,’”
Hafiz ibn Hajr said in “Al-Fath” 8/35, “It is indicated in this report that performing ablution when making dua is desirable (mustahab).”