[Machine] About the Prophet ﷺ , he said, "There is no mistake in the proper performance of prayer, except a transition from sitting to standing or from standing to sitting." This is the wording of the hadith of Ad-Darimi and in the hadith of Al-Ilyi narrated by Yazid ibn Abi Habib. Abu Bakr al-Anssi has also mentioned this hadith independently, but it is considered unknown (majhool).  

عَنِ النَّبِيِّ ﷺ قَالَ لَا سَهْوَ فِي وَثْبَةِ الصَّلَاةِ إِلَّا قِيَامٌ عَنْ جُلُوسٍ أَوْ جُلُوسٌ عَنْ قِيَامٍ لَفْظُ حَدِيثِ الدَّارِمِيِّ وَفِي حَدِيثِ الْأَيْلِيِّ ثنا يَزِيدُ بْنُ أَبِي حَبِيبٍ وَهَذَا حَدِيثٌ يَنْفَرِدُ بِهِ أَبُو بَكْرٍ الْعَنْسِيُّ وَهُوَ مَجْهُولٌ  

[Machine] He said that if a person makes a mistake while standing or sitting, or if they bow down in what should be done while standing, or perform the Salam while in the two units of prayer, then they should complete their prayer and perform two prostrations while still sitting, making the Tashahhud during those two prostrations, and then perform the Salam.  

أَنَّهُ قَالَ السَّهْوُ إِذَا قَامَ فِيمَا يَجْلِسُ فِيهِ أَوْ قَعَدَ فِيمَا يُقَامُ فِيهِ أَوْ سَلَّمَ فِي رَكْعَتَيْنِ فَإِنَّهُ يَفْرُغُ مِنْ صَلَاتِهِ وَيَسْجُدُ سَجْدَتَيْنِ وَهُوَ جَالِسٌ يَتَشَهَّدُ فِيهِمَا وَيُسَلِّمُ  

[Machine] Imam Al-Faqih Abu Al-Fath Al-Umari informed us that Abdullah Ibn Al-Sharifi told us that Abu Al-Qasim Al-Baghawi narrated to us from Ali Ibn Muslim who narrated from Abu Dawud who narrated from Shu'bah, who informed us that Thabit said: Anas prayed with us and he stood up when he was supposed to sit, and he sat when he was supposed to stand, and he made two prostrations. He also reported from his companions that they used to do the same.  

أَخْبَرَنَا الْإِمَامُ الْفَقِيهُ أَبُو الْفَتْحِ الْعُمَرِيُّ أنبأ عَبْدُ الرَّحْمَنِ الشَّرِيحِيُّ ثنا أَبُو الْقَاسِمِ الْبَغَوِيُّ ثنا عَلِيُّ بْنُ مُسْلِمٍ ثنا أَبُو دَاوُدَ ثنا شُعْبَةُ أنبأ ثَابِتٌ قَالَ صَلَّى بِنَا أَنَسٌ فَقَامَ فِيمَا يَنْبَغِي لَهُ أَنْ يَقْعُدَ أَوْ قَعَدَ فِيمَا يَنْبَغِي لَهُ أَنْ يَقُومَ فَسَجَدَ سَجْدَتَيْنِ وَحَدَّثَ عَنْ أَصْحَابِهِ أَنَّهُمْ كَانُوا يَفْعَلُونَ ذَلِكَ