Chapter on the Adhan (Call to Prayer) and the Iqamah
Tahdhīb al-Aḥkām|Volume 2|Book 1|Chapter 6
وَ عَنْهُ عَنْ فَضَالَةَ عَنِ اَلْعَلاَءِ عَنْ مُحَمَّدٍ عَنْ أَحَدِهِمَا عَلَيْهِمَا اَلسَّلاَمُ قَالَ: سَأَلْتُهُ عَنِ اَلرَّجُلِ يُؤَذِّنُ وَ هُوَ يَمْشِي أَوْ عَلَى ظَهْرِ دَابَّتِهِ وَ عَلَى غَيْرِ طَهُورٍ فَقَالَ« إِذَا كَانَ اَلتَّشَهُّدُ مُسْتَقْبِلَ اَلْقِبْلَةِ فَلاَ بَأْسَ»
Narrated from him from Fadalah from al-’Alaʾ from Muhammad from one of the two (Imams عليه السلام), peace be upon them, who said: I asked Him عليه السلام about a man who gives the adhan while walking, or on the back of his animal, or without being in a state of ritual purity. Imam عليه السلام said: "If the tashahhud (the part of the adhan with ‘Ashhadu...’) is said while facing the qiblah, then there is no harm."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 61
- Ṣaḥīḥ al-Tahdhīb