[Machine] The Messenger of Allah ﷺ said, "Let no one prevent the call to prayer (Adhan) by Bilal, or he said, the announcement by Bilal, from his pre-dawn meal (Sahur), for indeed he gives the Adhan or he said, announces to notify the people who are standing or to wake up those who are sleeping." Then he said, "It is not appropriate for him to say like this, or to say like that, until he says like this."  

قَالَ رَسُولُ اللهِ ﷺ لَا يَمْنَعَنَّ أَحَدًا مِنْكُمْ أَذَانُ بِلَالٍ أَوْ قَالَ نِدَاءُ بِلَالٍ مِنْ سَحُورِهِ فَإِنَّهُ يُؤَذِّنُ أَوْ قَالَ يُنَادِي لِيَرْجِعَ قَائِمُكُمْ أَوْ لِيُنَبِّهَ نَائِمَكُمْ ثُمَّ قَالَ لَيْسَ أَنْ يَقُولَ هَكَذَا أَوْ قَوْلَ هَكَذَا حَتَّى يَقُولَ هَكَذَا