Answer:
(Fatwa: 36/D=7/K=1433)
(1) Kaffarah is not wajib in case you do not remember taking oath and doing against it with surety, rather it is mere doubt. You should do taubah and istighfar. There is no harm if you pay kaffarah as precautionary. The detail of the kaffarah is given in below lines.
(2) And if you are sure that you take oath and went against it then it is wajib to pay its kaffarah. The kaffarah of one oath is to feed ten poor two times full stomach or to give 1.633 Kg wheat or its price to ten poor. And if you cannot bear it then it is enough to keep three days fast for kaffarah. And if you take oath of different things then you will have to give kaffarah of as much oath as you broke.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
