If he does it by mistake, there is no expiation.

If one makes a vow to not speak to someone (faasiq) and then accidentally does so, do they still have to offer expiation?

Oaths | October 18, 2015 3:01 am
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A brother is collecting money for the Syrian refugees to give them rice and lentils can I give him the money to feed the poor for 10 people with my intention to expiate my oath?
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Is it permissible to pray to Allah that if I get a job I will perform 3 Umrahs? Or if I get a promotion I will fast for 3 days? Things like if Allah fulfills a dua, I will give sadaqah…