Chain of Command, formally known as Mustalah ul Hadeeth or ‘Ilm ul Hadeeth, is a course regarding the Sciences of Hadeeth. Sheikh AbdulBary Yahya divided the course into two major sections corresponding to each weekend. The first weekend essentially covers the Scholars of Hadith, otherwise known in Arabic as the Muhadithoon. The second weekend is dedicated to the actual science of scrutinizing and analyzing hadeeth. Allah (swt) has made a promise to preserve the Qur’an, Surah Hijr, Verse 9. إِ َْ!ُ َ َْ اِّآَْ وَإِ َُ ََُِنَ () Verily We: it is we who have sent down the Dhikr (i.e. the Qur'ân) and surely, we will Guard it (from corruption) . Part of the preservation of the Qur’an is the preservation of the Sunnah of the Prophet ا . This is because the Sunnah explains how the Qur’an is understood and applied. It is in this course we examine how exactly the second source of legislation, Sunnah, was preserved. The means by which Allah و ن has preserved the ٍunnah is through the Muhadeethoon. The Qur’an has come to us by way of Tawaatur, and its obvious authenticity is not an issue of discussion. As for the Sunnah, many do not understand it’s method of preservation and authenticity. Therefore, it is essential for us to spend time learning about the preservation of the Sunnah of the Messenger of Allah Book author :