If the one who joins the prayer late doubts whether he caught the bowing with the imam, what should he do?

The Shaykh : Or you know that you did not catch it, and the matter in this is clear. If you know that you caught it, then you have caught it. If you know that you did not catch it, then you have missed the rak'ah. Or it is more likely in your mind that you caught it, so you count the rak'ah, because in acts of worship, the criterion is what is in the mind of the one obligated. You count it as a rak'ah. Then, if you caught the imam from the beginning of the prayer, he carries the prostration for forgetfulness for you. If you missed part of the prayer, do you prostrate for forgetfulness before the closing salam or after it? Question: After the salam, because now it is based on his predominant suspicion. Whenever a person builds his action on his predominant suspicion, the prostration is after the salam. Or it is more likely in your mind that you did not catch it, and that he said, "Allah hears the one who praises Him," and raised his head before you reached the point of bowing. In this case, you did not catch the rak'ah, and you must perform a replacement for it and prostrate for forgetfulness. Before the salam or after it? After the salam. Good. Or you doubt whether you caught it while bowing, or whether he raised his head before you caught it while bowing. In this case, you cancel this rak'ah, and you prostrate for forgetfulness, meaning you perform a replacement for it with a rak'ah and prostrate for forgetfulness before the salam, because the prostration is for doubt without a predominant suspicion.

The questioner : ...

The Shaykh : The scholars said: One should not hasten with an obvious speed. You hear, rather, one should hasten with a speed that is not...

The questioner : ...

The Shaykh : Yes, that is right.