872. hadíth
وَ رَوَى أَبُو بَصِيرٍ عَنْ أَحَدِهِمَا عَلَيْهِمَا اَلسَّلاَمُ أَنَّهُ قَالَ: «إِنَّ بِلاَلاً كَانَ عَبْداً صَالِحاً فَقَالَ لاَ أُؤَذِّنُ لِأَحَدٍ بَعْدَ رَسُولِ اَللَّهِ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ فَتُرِكَ يَوْمَئِذٍ حَيَّ عَلَى خَيْرِ اَلْعَمَلِ.
Abu Basir narrated from one of the Imams (a.s) that He said: "Bilal was a righteous servant who said: 'I will not call the adhan for anyone after the Messenger of Allah (saws).' Therefore, on that day, 'Hayya 'ala khayr al-'Amal' (Hasten to the best of deeds) was left out."