Reference: Siyar A’laam an-Nubalaa v4 p161
az-Zibruqaani رحمه الله said:
I was with , and I began cursing al-Hajjaaj and mentioning his misdeeds. He (Abu Waa.il) then said [to me]:
‘Don’t curse him. How do you know he hasn’t asked Allaah سبحانه و تعالى to forgive him, and He has [since] forgiven him.’
