One who says the Salam after two or three Rak’ah by mistake Sunan Ibn Majah 1215

Arabic hadith text
حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، وَأَحْمَدُ بْنُ ثَابِتٍ الْجَحْدَرِيُّ، حَدَّثَنَا عَبْدُ الْوَهَّابِ، حَدَّثَنَا خَالِدٌ الْحَذَّاءُ، عَنْ أَبِي قِلاَبَةَ، عَنْ أَبِي الْمُهَلَّبِ، عَنْ عِمْرَانَ بْنِ الْحُصَيْنِ، قَالَ سَلَّمَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ فِي ثَلاَثِ رَكَعَاتٍ مِنَ الْعَصْرِ ثُمَّ قَامَ فَدَخَلَ الْحُجْرَةَ فَقَامَ الْخِرْبَاقُ رَجُلٌ بَسِيطُ الْيَدَيْنِ فَنَادَى يَا رَسُولَ اللَّهِ أَقَصُرَتِ الصَّلاَةُ؟ فَخَرَجَ مُغْضَبًا يَجُرُّ إِزَارَهُ. فَسَأَلَ، فَأُخْبِرَ.فَصَلَّى تِلْكَ الرَّكْعَةَ الَّتِي كَانَ تَرَكَ. ثُمَّ سَلَّمَ. ثُمَّ سَجَدَ سَجْدَتَيْنِ. ثُمَّ سَلَّمَ ‏.‏
Translation
It wasnarrated that ‘Imran bin Husain said

“The Messenger of Allah(ﷺ) said the Salam after three Rak’ah for ‘Asr, then he stoodup andwent into the apartment. Khirbaq, a man with big hands, stoodup andcalled out: ‘O Messenger of Allah! Has the prayer beenshortened?’ Hecame out angrily, dragging his lower garment, andasked about it, andwas told (what had happened). So he performed theRak’ah that he hadomitted, then he said the Salam, then heprostrated twice and said theSalam again.”