Complex sentence: Bukhari was one of the Chaar Yaar (not to be confused with the Rashidun), who were the group of pioneers of the Suhrawardiyya Sufi and Chisti movements of the 13th century.
Split into simpler sentences: Bukhari was one of the Chaar Yaar (not to be confused with the Rashidun). The Chaar Yaar were the group of pioneers of the Suhrawardiyya Sufi and Chisti movements of the 13th century.