The ruling on one who builds his prayer on the lesser number and is then informed of an excess in it

Question:
If I am in prayer and doubt overtakes me, so I build on the lesser number, and after finishing the prayer, someone next to me speaks to me and says to me: "Your prayer has an excess," what should I do?

Answer:
It does not harm you; if you build on certainty while in doubt: did you pray three or four in the midday prayer, for example, and you build on certainty and complete four according to your belief, then when you conclude the prayer, some people say to you: "You have an excess," it does not harm you; because you acted according to the Shari'ah, and likewise the imam if he does that and takes precaution, then some people say to him after the salam: "You have an excess," it does not harm, but the one who knows that the imam has an excess ... does not stand with him, he sits and alerts him saying: Subhan Allah! Subhan Allah! If he returns, praise be to Allah, and if not, he remains until he concludes the prayer with his imam; because the imam may believe that he is correct and they are mistaken, and he does not respond to them and continues and completes the excess, so they sit if they believe that they are correct, they sit and wait until he concludes with them, as for the one who does not know, he follows the imam, the one who has no insight follows the imam, and even if a person who knows that he has an excess follows him, but he is ignorant of the ruling, he thinks that it is obligatory for him, he is ignorant of the legal ruling, then that does not harm him either.
So the result is that if a person builds on certainty in his prayer in which he was forgetful, then he is alerted afterwards that he added, that does not harm him, yes.

The presenter : May Allah reward you with good.