Taiseer Ul Quran is written in very simple and effective language because Maulana Abdul Rehman Kilani himself was a very simple and God fearing man. He wrote many books including well known Urdu book Aynah Parvaizeyat denouncing the beliefs of Munkareen-e-Hadith. He also discussed many modern issues in his Tafsir and has full command over modern knowledge.
The book is about people who backbite and slander others and it teaches children why they should not be getting involved in such activities. In the beginning, the book features verses of Surah Al Humazah and then reveals details on the negative effects of this action and how it affects the Muslim society. It also features advice of Prophet Muhammad ﷺ to Muslims about slander and backbiting and how they can stay away from this sin.