878. hadíth
وَ سَأَلَ مُحَمَّدُ بْنُ مُسْلِمٍ أَبَا جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ: عَنِ اَلرَّجُلِ يُؤَذِّنُ وَ هُوَ يَمْشِي وَ هُوَ عَلَى غَيْرِ طُهْرٍ أَوْ هُوَ عَلَى ظَهْرِ اَلدَّابَّةِ قَالَ «نَعَمْ إِذَا كَانَ اَلْمُتَشِّهِدُ مُسْتَقْبِلَ اَلْقِبْلَةِ فَلاَ بَأْسَ.
Muhammad ibn Muslim asked Imam Muhammad ibn Ali Al-Baqir (a.s) about a man who gives the adhan (call to prayer) while walking, while not in a state of ritual purity, or while riding an animal. The Imam said: "Yes, it is permissible if the one giving the testimony of faith (in the adhan) faces the Qiblah; there is no issue."