1000. hadíth
وَ سَأَلَ أَحْمَدُ بْنُ مُحَمَّدِ بْنِ أَبِي نَصْرٍ اَلْبَزَنْطِيُّ اَلرِّضَا عَلَيْهِ اَلسَّلاَمُ: عَنْ رَجُلٍ نَسِيَ أَنْ يُكَبِّرَ تَكْبِيرَةَ اَلاِفْتِتَاحِ حَتَّى كَبَّرَ لِلرُّكُوعِ فَقَالَ «أَجْزَأَهُ.
Ahmad ibn Muhammad ibn Abi Nasr al-Bazanti asked Imam al-Ridha (a.s) about a man who forgot to say the Takbir al-Ihram (opening Takbir) until he had already said the Takbir for bowing (ruku'). Imam (a.s) replied: "It suffices him”.