خَطَبَنَا ابْنُ عَبَّاسٍ فِي يَوْمٍ رَدْغٍ، فَلَمَّا بَلَغَ الْمُؤَذِّنُ حَىَّ عَلَى الصَّلاَةِ. فَأَمَرَهُ أَنْ يُنَادِيَ الصَّلاَةُ فِي الرِّحَالِ. فَنَظَرَ الْقَوْمُ بَعْضُهُمْ إِلَى بَعْضٍ فَقَالَ فَعَلَ هَذَا مَنْ هُوَ خَيْرٌ مِنْهُ وَإِنَّهَا عَزْمَةٌ.
Abdullah ibn al-Harith reported: Ibn Abbas addressed us on a muddy day. When the caller to prayer reached “Come to the prayer,” he ordered him to call out, “The prayer (is) in the dwellings!” The people looked at one another, and he said …
also in Sahih al-Bukhari 668