Call to Prayers (Adhaan)
10/125. Chapter:
The superiority of saying Allahumma Rabbana lakal hand (O Allah, Our Lord!, All the praises and thanks are for You)
Sahih Bukhari
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، قَالَ أَخْبَرَنَا مَالِكٌ، عَنْ سُمَىٍّ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " إِذَا قَالَ الإِمَامُ سَمِعَ اللَّهُ لِمَنْ حَمِدَهُ. فَقُولُوا اللَّهُمَّ رَبَّنَا لَكَ الْحَمْدُ. فَإِنَّهُ مَنْ وَافَقَ قَوْلُهُ قَوْلَ الْمَلاَئِكَةِ غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ ".
Narrated Abu Huraira: Allah's Messenger (ﷺ) said, "When the Imam says, "Sami`a l-lahu liman hamidah," you should say, "Allahumma Rabbana laka l-hamd." And if the saying of any one of you coincides with that of the angels, all his past sins will be forgiven."
Reference : Sahih al-Bukhari 796In-book reference : Book 10, Hadith 191USC-MSA web (English) reference : Vol. 1, Book 12, Hadith 762