What does one do if he remembers he made 5 rakahs in the Asr prayer instead of 4 and he remembers it after some while. Like 10 or 15 mins and he has got of from the masjid. May Allah reward you with goodness.
Shaikh Waleed Boghdady:
If you made five rakaat instead of four and you forgot to make sujud sahu or you remembered it after 15 or 20 minutes for example, then there is nothing to do, there is no problem, the prayer in shaa Allah is valid, but if you made only three rakaat instead of four, then yes, you have to repeat your prayer.