Ibn Rajab (795H)
Abdurrahman ibn Ahmad ibn Rajab al-Hanbali (736-795H)
Ash-Sheykh, al-Imam, al-Alim, al-Allamah, al-Qudwah, al-Baraka, al-Hafidh, al-'Umdah, ath-Thiqah, al-Hujjah, al-Bahr.
A Muhaddith expert in the science of the Ilals, he was a pupil of Imam Ibn al-Qayyim until his death.
The author of important books such as Jami' al-Ulum wal-Hikam, Sharh Ilal Tirmidhi, al-Qawa'id, Fath al-Bari. Hanbali of Madhab.