Sujood ul-sahw (prostration for forgetfulness) if one joins congregation late

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Check below answers in case you are looking for other related questions:
What is to be said in the prostration of forgetfulness and the prostration of recitation?
Should he take his cue from the person next to him if he is unsure about the number of rak’ahs?

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Related Answers:
Imam errs during prayer and does not know what is the mistake
If the imam stands up for a fifth rak’ah
He did the first sajdah of sujood al-sahw (prostrations for forgetfulness in the prayer), then he remembered that he did not do anything that required sujood al-sahw
What is to be said in the prostration of forgetfulness and the prostration of recitation?
Should he take his cue from the person next to him if he is unsure about the number of rak’ahs?

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