"I heard Ash-Sha'bi say: 'Alqamah bin Qais forgot (and made a mistake) in his prayer, and they told him about that after he had spoken, He said: 'Is that true, O odd-eyed one?' He said: 'Yes.' So he undid his cloak, then he performed two prostrations of forgtfulness,and said: 'This is what the Messenger of Allah ﷺ did.' He said: And I heard Al-Hakam say: 'Alqamah had prayed five.'"
نَعَمْ فَحَلَّ حُبْوَتَهُ ثُمَّ سَجَدَ سَجْدَتَىِ السَّهْوِ وَقَالَ هَكَذَا فَعَلَ رَسُولُ اللَّهِ ﷺ قَالَ وَسَمِعْتُ الْحَكَمَ يَقُولُ كَانَ عَلْقَمَةُ صَلَّى خَمْسًا 33