Sahih al-Bukhari
Sahih al-Bukhari 613
Arabic hadith text
قَالَ يَحْيَى وَحَدَّثَنِي بَعْضُ، إِخْوَانِنَا أَنَّهُ قَالَ لَمَّا قَالَ حَىَّ عَلَى الصَّلاَةِ. قَالَ لاَ حَوْلَ وَلاَ قُوَّةَ إِلاَّ بِاللَّهِ. وَقَالَ هَكَذَا سَمِعْنَا نَبِيَّكُمْ صلى الله عليه وسلم يَقُولُ.
Translation
Yahya said: One of our brothers told me that when the caller said, ‘Come to prayer,’ he replied, ‘There is no power or strength except through Allah.’ He said: This is how we heard your Prophet (peace and blessings be upon him) say it.