The author of this book is Al -Hussein bin Ahmed bin Khalwayh, Abu Abdullah, a linguist of the great grammarians. Its origin is from Hamatan. He visited Yemen and stayed with a period, and moved to the Levant, so Aleppo settled and glorified his fame, so the sons of Hamdan were highly status. He had with Al -Mutanabbi councils and detectives at Saif al -Dawla, and Saif al -Dawla entrusted him with disciplining his children. He died in Aleppo. This book on the science of Quranic readings revolves around the arrest of Quranic readings and presented the almost ancient and modern slanders.