ANSWER:

After he finishes his second salam.

If I join the congregation at the 2nd or 3rd rakat after Imam says the salaam then I have to stand up and pray my missed rakats. Now my question is when should I stand up when the Imam says his first salaam or after he finishes the salaam ?

Prayer | January 28, 2022 8:04 pm
Previous

I heard you said you can pray the asr prayer in the karahat if one has to(delay it etc), what about salat’ul fajr? Can one pray it in karahat if they wake up late unintentionally?(or out of laziness?)
Next

Sheikh, usually I walk to and from the masjid in order to gain the reward for doing so, but sometimes I get offered a ride. Will I get the reward based off my intentions?