Answer:
(Fatwa: 2522/2082=B/1429)
Adultery is breach against the right of Allah; if she repents to Allah for her sins sincerely she does not need to seek forgiveness from her husband. Yes, if the husband is angry for some other matter she can ask for his forgiveness.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
