Answer:
(Fatwa: 409/340/B=1433)
If this act was done before starting haiz (menstruation) then there is no kaffarah. However, ghusl is wajib on both the husband and wife as they discharged the semen with lust. Ghusl shall be wajib on the husband instantly. As for wife, since she started her haiz she shall do ghusl after her haiz stops.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
