Mistake in Recitation

إِنَّ اللَّهَ فَرَضَ الرُّكُوعَ وَ السُّجُودَ وَ الْقِرَاءَةُ سُنَّةٌ فَمَنْ تَرَكَ الْقِرَاءَةَ مُتَعَمِّداً أَعَادَ الصَّلَاةَ وَ مَنْ نَسِيَ الْقِرَاءَةَ فَقَدْ تَمَّتْ صَلَاتُهُ وَ لَا شَيْ‌ءَ عَلَيْهِ.

“One of the two Imam, ‘Alayhim al-Salam, has said, ’Allah has made Ruku‘ (bowing down on one’s knees) and Sujud (prostrations) obligatory. Recitation is Sunnah. Whoever omits recitation willfully performs Salah (prayer) again. Whoever forgets recitation his Salah (prayer) is complete and he is not obligated for anythin

سَأَلْتُ أَبَا عَبْدِ اللَّهِ ع عَنْ رَجُلٍ نَسِيَ أُمَّ الْقُرْآنِ قَالَ إِنْ كَانَ لَمْ يَرْكَعْ فَلْيُعِدْ أُمَّ الْقُرْآنِ.

from who has said the following: “I once asked abu ‘Abd Allah (a.s.), about a man who forgets ‘Umm al-Quran (al- Fatihah). He (the Imam) said, ‘If he has not yet reached Ruku‘ position, he recites it again.’”

قُلْتُ لِأَبِي عَبْدِ اللَّهِ ع إِنِّي صَلَّيْتُ الْمَكْتُوبَةَ فَنَسِيتُ أَنْ أَقْرَأَ فِي صَلَاتِي كُلِّهَا فَقَالَ أَ لَيْسَ قَدْ أَتْمَمْتَ الرُّكُوعَ وَ السُّجُودَ قُلْتُ بَلَى قَالَ قَدْ تَمَّتْ صَلَاتُكَ إِذَا كَانَ نِسْيَاناً.

“I once said to abu ‘Abd Allah (a.s.), ‘I performed the obligatory Salah (prayer) but forgot the recitation in all of my Salah (prayer). He (the Imam) asked, ‘Did you complete Ruku‘ (bowing down on one’s knees) and Sujud (prostrations)?’ I replied, ‘Yes, I did so.’ He (the Imam) said, ‘Your Salah (prayer) is complete i