حَدَّثَنَا مُسَدَّدٌ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ أَيُّوبَ، وَعَبْدِ الْحَمِيدِ، صَاحِبِ الزِّيَادِيِّ وَعَاصِمٍ الأَحْوَلِ عَنْ عَبْدِ اللَّهِ بْنِ الْحَارِثِ قَالَ 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.‏
Translation
Narrated `Abdullah bin Al-Harith

Once on a rainy muddy day, Ibn `Abbas delivered a sermon in our presence and when the Mu'adhdhin pronounced the Adhan and said, "Haiyi `ala-s-sala(t) (come for the prayer)" Ibn `Abbas ordered him to say 'Pray at your homes.' The people began to look at each other (surprisingly). Ibn `Abbas said. "It was done by one who was much better than I (i.e. the Prophet (ﷺ) or his Mu'adh-dhin), and it is a license.'