Sahih Muslim Book - 6, Hadith - 1813

وَحَدَّثَنَاهُ زُهَيْرُ بْنُ حَرْبٍ حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِىٍّ ح وَحَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ أَخْبَرَنَا أَبُو النَّضْرِ قَالَ حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ عَبْدِ اللَّهِ بْنِ أَبِى سَلَمَةَ عَنْ عَمِّهِ الْمَاجِشُونِ بْنِ أَبِى سَلَمَةَ عَنِ الأَعْرَجِ بِهَذَا الإِسْنَادِ وَقَالَ كَانَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- إِذَا اسْتَفْتَحَ الصَّلاَةَ كَبَّرَ ثُمَّ قَالَ « وَجَّهْتُ وَجْهِى ». وَقَالَ « وَأَنَا أَوَّلُ الْمُسْلِمِينَ ». وَقَالَ وَإِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ قَالَ « سَمِعَ اللَّهُ لِمَنْ حَمِدَهُ رَبَّنَا وَلَكَ الْحَمْدُ ». وَقَالَ « وَصَوَّرَهُ فَأَحْسَنَ صُوَرَهُ ». وَقَالَ وَإِذَا سَلَّمَ قَالَ « اللَّهُمَّ اغْفِرْ لِى مَا قَدَّمْتُ ». إِلَى آخِرِ الْحَدِيثِ وَلَمْ يَقُلْ بَيْنَ التَّشَهُّدِ وَالتَّسْلِيمِ.

It was narrated from Al-A'raj with this chain (a similar Hadith as no. 1812), and he said: "When the Messenger of Allah (s.a.w) started his prayer, he would say the Takbir and then say: 'I have turned my face...' and he said: 'I am the first of the Muslims.' And when raising his head from bowing he said: 'Allah hears those who praise Him; our Lord, to You be praise.' And he said: '... Who has formed it and formed it well.' And when he said the Salam, he said: 'O Allah, forgive me my previous sins...' And he did not say: "between the Tashah-hud and the Taslim.''