Full Sharh — Al-Adab Al-Mufrad 1221
حَدَّثَنَا مُعَاذُ بْنُ فَضَالَةَ، قَالَ: حَدَّثَنَا هِشَامٌ الدَّسْتُوَائِيُّ، عَنْ يَحْيَى هُوَ ابْنُ أَبِي كَثِيرٍ، عَنْ أَبِي سَلَمَةَ قَالَ: حَدَّثَنِي رَبِيعَةُ بْنُ كَعْبٍ قَالَ: كُنْتُ أَبِيتُ عِنْدَ بَابِ النَّبِيِّ صلى الله عليه وسلم فَأُعْطِيهِ وَضُوءَهُ، قَالَ: فَأَسْمَعُهُ الْهَوِيَّ مِنَ اللَّيْلِ يَقُولُ: سَمِعَ اللَّهُ لِمَنْ حَمِدَهُ، وَأَسْمَعُهُ الْهَوِيَّ مِنَ اللَّيْلِ يَقُولُ: الْحَمْدُ لِلَّهِ رَبِّ الْعَالَمِينَ.
English Translation
Rabi'a ibn Ka'b related, "I used to spend the night at the door of the Prophet, may Allah bless him and grant him peace, and I would give him his wudu' water." He said, "After a long period of the night had passed, I heard him say, 'Allah hears whoever praises Him,' and I heard him say after a long period of the night had passed, 'Praise be to Allah, Lord of the Worlds.'"
Source
Al-Adab Al-Mufrad(الأدب المفرد)
Sleep and night lodging
Hadith Number
1221