بسم الله الرحمن الرحيم
(Fatwa: 603/582/M=5/1438)
No monetary kaffarah is wajib. You should do taubah and istighfar. If you wear it in future then make it sure that you take off before you enter in the toilet.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
