Sheikh Omar Bin Abdullah Al-Khatib was a scholar who lived in Hijaz for 10 years and was given permission to teach in Haramayn. His name is listed in the list of leading scholars by Al-Azhar University.

He taught in Singapore and produced many local scholars. This book is a collection of notes compiled by Ustaz M. Salleh bin Abdul Hamid who had studied with him in Singapore. This is just a part of the post written under the title "Chapter Thaharah" about purity in Islam.