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Ibn ‘Umar said : The Prophet (ﷺ) prayed and recited the Qur’an in it. He was then confused in it (in his recitation). When he finished (his prayer), he said to Ubayy (b. Ka’b): Did you pray along with us? He said: Yes. He said: What prevented you (from correcting me)?
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا يَزِيدُ بْنُ مُحَمَّدٍ الدِّمَشْقِيُّ، حَدَّثَنَا هِشَامُ بْنُ إِسْمَاعِيلَ، حَدَّثَنَا مُحَمَّدُ بْنُ شُعَيْبٍ، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ الْعَلاَءِ بْنِ زَبْرٍ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم صَلَّى صَلاَةً فَقَرَأَ فِيهَا فَلُبِسَ عَلَيْهِ فَلَمَّا انْصَرَفَ قَالَ لأُبَىٍّ " أَصَلَّيْتَ مَعَنَا " . قَالَ نَعَمْ . قَالَ " فَمَا مَنَعَكَ " .
sunnah.com