أَخْبَرَنَا أَبُو نُعَيْمٍ ، حَدَّثَنَا زُهَيْرٌ ، عَنْ الْعَلَاءِ بْنِ الْمُسَيَّبِ ، عَنْ عَمْرِو بْنِ مُرَّةَ ، عَنْ طَلْحَةَ بْنِ يَزِيدَ الْأَنْصَارِيِّ ، عَنْ حُذَيْفَةَ ، أَنّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ يَقُولُ بَيْنَ السَّجْدَتَيْنِ :" رَبِّ اغْفِرْ لِي ".
فَقِيلَ لِعَبْدِ اللَّهِ : تَقُولُ هَذَا؟ قَالَ : رُبَّمَا قُلْتُ، وَرُبَّمَا سَكَتُّ

Abu Nu`aym told us, Zuhayr told us, on the authority of Al-Ala’ bin Al-Musayyab, on the authority of Amr bin Murrah, on the authority of Talha bin Yazid Al-Ansari, on the authority of Hudhayfah, that the Prophet, may God bless him and grant him peace, used to say between the two prostrations: “Lord, forgive me.”
It was said to Abdullah: Do you say this? He said: Perhaps I spoke, and perhaps I remained silent.