Ibn Rajab al-Ḥanbalī (795AH/1392CE) was born in Baghdad where he began his studies with his father, who himself was a great scholar. He the studied in Egypt and Damascus where he settled until he died. He devoted himself to hadith and fiqh according to the Ḥanbalī school until he became an expert in the fields, eventually teaching the subjects at the Jāmiʿ Banī Umayyah and other seats of learning in Damascus. He was known for his piety and righteousness and the hearts of people were full of love for him. Among his best known and most referenced works is Jāmiʿ al-ʿUlūm wa al-Ḥikam (Published by Turath Publishing ), the commentary on al-Arbaʿīn (the forty hadith) of Imam Nawawī. Ḥāfiẓ Ibn Ḥajar al-ʿAsqalānī said of him, ‘He was a great expert in the sciences of hadith—the historical accounts of narrators, the chains of narration and meaning of the text.