If you swear by Allah just because I could not control mytongue about something false what should I do should I feed 10 poor people or should I fast 3

Question

I said to my friend wallahi this is not your brother but it was

Answer 1

Alhamdulillah,

If the oath you mentioned in your question is an unintentional oath, you do not have to pay any expiation for it.

Allah Says:

Allâh will not call you to account for that which is unintentional in your oaths, but He will call you to account for that which your hearts have earned [2:225]

And Allah knows best!