Some of them tried to excel the others (in obtaining water), and in the hadith transmitted by Malik b. Mighwal (the words are): When it was noon, Bilal came out and summoned (people) to (noon) prayer.
عَنِ النَّبِيِّ ﷺ بِنَحْوِ حَدِيثِ سُفْيَانَ وَعُمَرَ بْنِ أَبِي زَائِدَةَ يَزِيدُ بَعْضُهُمْ عَلَى بَعْضٍ وَفِي حَدِيثِ مَالِكِ بْنِ مِغْوَلٍ فَلَمَّا كَانَ بِالْهَاجِرَةِ خَرَجَ بِلاَلٌ فَنَادَى بِالصَّلاَةِ