سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 782
The Book of Leading the Prayer (Al-Imamah)
When people are together and are all of the same status
أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، عَنْ يَحْيَى، عَنْ هِشَامٍ، قَالَ حَدَّثَنَا قَتَادَةُ، عَنْ أَبِي نَضْرَةَ، عَنْ أَبِي سَعِيدٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ إِذَا كَانُوا ثَلاَثَةً فَلْيَؤُمَّهُمْ أَحَدُهُمْ وَأَحَقُّهُمْ بِالإِمَامَةِ أَقْرَؤُهُمْ .
It was narrated from Abu Sa'eed that the Prophet (ﷺ) said: "when there are three people let one of them lead the prayer, and the one who is most entitled to lead the prayer is the one who has most knowledge of the Qur'an."
Sunan an-Nasa'i, 782Sahih (Darussalam)