حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا يَحْيَى بْنُ آدَمَ، حَدَّثَنَا إِسْرَائِيلُ، عَنْ أَبِي إِسْحَاقَ، عَنْ عَبْدِ الْجَبَّارِ بْنِ وَائِلٍ، عَنْ أَبِيهِ، قَالَ صَلَّيْتُ مَعَ النَّبِيِّ ـ صلى الله عليه وسلم ـ فَقَالَ رَجُلٌ الْحَمْدُ لِلَّهِ حَمْدًا كَثِيرًا طَيِّبًا مُبَارَكًا فِيهِ . فَلَمَّا صَلَّى النَّبِيُّ ـ صلى الله عليه وسلم ـ قَالَ " مَنْ ذَا الَّذِي قَالَ هَذَا " . قَالَ الرَّجُلُ أَنَا وَمَا أَرَدْتُ إِلاَّ الْخَيْرَ . فَقَالَ " لَقَدْ فُتِحَتْ لَهَا أَبْوَابُ السَّمَاءِ فَمَا نَهْنَهَهَا شَىْءٌ دُونَ الْعَرْشِ " .
It was narrated from 'Abdul-Jabbar bin Wa'il that : his father said: "I prayed with the Prophet (PBUH) and a man said: 'Alhamdu lillahi hamdan kathiran tayyiban mubarakan fihi (Praise is to Allah, much, good and blessed praise).' When the Prophet (PBUH) finished praying, he said: 'Who said that?' The man said: 'It was me, but I did not mean anything but good.' He said: 'The gates of heaven were opened because of it and nothing prevented it from reaching the Throne.'" Translation Not Available
Book Ref: Sunan Ibn Majah Book 33 Hadith 3802
Web Ref: Sunan Ibn Majah Vol 5 Book 33 Hadith 3802