870. hadíth
وَقَالَ عَلِيٌّ عَلَيْهِ اَلسَّلاَمُ: «آخِرُ مَا فَارَقْتُ عَلَيْهِ حَبِيبَ قَلْبِي صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ أَنَّهُ قَالَ «يَا عَلِيُّ إِذَا صَلَّيْتَ فَصَلِّ صَلاَةَ أَضْعَفِ مَنْ خَلْفَكَ وَ لاَ تَتَّخِذَنَّ مُؤَذِّناً يَأْخُذُ عَلَى أَذَانِهِ أَجْراً».
Imam Ali (a.s) said: "The last thing my beloved (the Prophet, peace and blessings be upon him and his family) said to me before parting was: 'O’ Ali, when you lead the prayer, lead it considering the weakest among those behind you. And do not appoint a mu'adhdhin who takes payment for his adhan.'"