Narrated Jabir:
The person who killed Khubaib was Abu Sarua (i.e. 'Uqba bin Al-Harith).
Vol: 005 Book: 059 Hadith: 413
A Selected Hadith
Narrated Anas bin Malik:
I heard Allah's Apostle saying, "Allah said, 'If I deprive my slave of his two beloved things (i.e., his eyes) and he remains patient, I will let him enter Paradise in compensation for them.'"
Vol: 007 Book: 070 Hadith: 557
A Selected Dua
O Allah, Your male slave and the child of Your female slave is in need of Your mercy, and You are not in need of his torment. If he was pious then increase his rewards and if he was a transgressor then pardon him.
Info: Al-Hakim 1/359 who graded it authentic and Ath-Thahabi agreed with him. See also Al-Albani, Ahkamul-Jana'iz, p. 125.