Chain of Command, formally known as Mustalah-ul-Hadeeth or Ilm-ul-Hadeeth, is a course regarding the Sciences of Hadeeth. Sheikh Abdul BaryYahya 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 Quran. Part of the preservation of the Quran is the preservation of the Sunnah of the Prophet . This is because the Sunnah explains how the Quran is understood and applied. It is in this course we examine how exactly the second source of legislation, Sunnah, was preserved.