Many researchers and students of knowledge benefited from the library, and several libraries were endowed to the library, the most important of which were the library of the judge of Unayzah, the library of Sheikh Ibn Uthaymeen Muhammad bin Abdul Aziz Al-Mutawa, the library of Saleh bin Ali bin Ghosun, a member of the Council of Senior Scholars, and the library of Abdul Rahman Al-Faryan, head of the Charitable Society for Quran Memorization. And the library of Dr. Ramadan Abdel Tawab, the linguist and member of the Arabic Language Academy in Egypt. The number of endowment libraries has reached more than 15 libraries.