“The Satan comes to any one of you while he is praying and comes between him and his soul, until he does not know whether he as added something or omitted something. If that happens, then he should prostrate twice before the Salam, then he should say the Salam.”
Sunan Ibn Majah Book 5, Hadith 414
← Previous Hadith “The Messenger of Allah (ﷺ) said the Salam after three Rak’ah for ‘Asr, then he stood up and went into the apartment. Khirbaq, a man with big hands, stood up and called out: ‘O Messenger of Allah! Has the prayer been shortened?’ He came out angrily, dragging his lower garment, and asked about it, and was told (what had happened). So he performed the Rak’ah that he had omitted, then he said the Salam, then he prostrated twice and said the Salam again.”

Sunan Ibn Majah Book 5, Hadith 413 Next Hadith → “The Satan comes between the son of Adam and his soul, and he does not know how many Rak’ah he has prayed. If a person notices that, then let him prostrate twice before he says the Salam.”

Sunan Ibn Majah Book 5, Hadith 415