Mishkat al-Masabih 666
Ibn ‘Umar reported God’s Messenger as  saying, “Three will be on mounds of musk on the day of resurrection:
a man who gives God and his patron their due, a man who leads people in prayer to their satisfaction, and a man who summons people to the five times of prayer every day and night.” 

Tirmidhi transmitted it and said that it is a gharib tradition.
وَعَنِ ابْنِ عُمَرَ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «ثَلَاثَةٌ عَلَى كُثْبَانِ الْمِسْكِ يَوْمَ الْقِيَامَةِ عَبَدٌ أَدَّى حَقَّ اللَّهِ وَحَقَّ مَوْلَاهُ وَرَجُلٌ أَمَّ قَوْمًا وَهُمْ بِهِ راضون وَرجل يُنَادي بالصلوات الْخمس فِي كُلَّ يَوْمٍ وَلَيْلَةٍ» . رَوَاهُ التِّرْمِذِيُّ وَقَالَ: هَذَا حَدِيث غَرِيب