Doa ruku' - 2: SUBHAANAKA ALLAHUMMA RABBANAA WA BIHAMDIKA ALLAHUMMAGHFIRLII
Imam Ahmad : 3558حَدَّثَنَا يَحْيَى بْنُ آدَمَ حَدَّثَنَا إِسْرَائِيلُ عَنْ أَبِي إِسْحَاقَ عَنْ أَبِي عُبَيْدَةَ عَنْ عَبْدِ اللَّهِ قَالَ مُنْذُ أُنْزِلَ عَلَى رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا جَاءَ نَصْرُ اللَّهِ وَالْفَتْحُ كَانَ يُكْثِرُ أَنْ يَقُولَ إِذَا قَرَأَهَا ثُمَّ رَكَعَ بِهَا أَنْ يَقُولَ سُبْحَانَكَ رَبَّنَا وَبِحَمْدِكَ اللَّهُمَّ اغْفِرْ لِي إِنَّكَ أَنْتَ التَّوَّابُ الرَّحِيمُ ثَلَاثًا
Narrated to us [Yahya bin Adam] has told us [Isra`il] from [Abu Ishaq] from [Abu Ubaidah] from [Abdullah] he said : Since the revelation of the verse: (IDZA JA`A NASHRULLAHI WAL FATHU) to Rasulullah sallallaahu 'alaihi wasallam, he said many things which when he read it then while bowing down he said: "(SUBHANAKA RABBANA WA BIHAMDIKA ALLAHUMMAGHFIRLI, INNAKA ANTAT TAWWABUR RAHIM) (Glory be to You, our Rabb and all praise be to You, O Allah, forgive me indeed You are the Most Forgiving All-Merciful)." A total of three times.