One of the most prominent emblems of Islam, the adhan, or call to prayer, is recognised by both Muslims and Non-Muslims the world over. Now, for the first time, this topic is dealt with in all its nuance and complexity in light of Imam Muhammad ibn Isa al-Tirmidhi's Sunan, including the Arabic text & translation. The issues arising from, and associated with the Adhan, are also tackled from the standpoint of the traditional sciences of Hadith, jurisprudence and Qur'anic commentary. In doing so, not only is the significance and relevance of the Adhan underscored, but so too is Imam al-Tirmidhi's pedagogical methodology.