Sheikhul Islam Ibn Ḥajar al-ʿAsqalānī (Arabic: ابن حجر العسقلاني;[a] 18 February 1372 – 2 February 1449), or simply ibn Ḥajar,[1] was a classic Islamic scholar "whose life work constitutes the final summation of the science of hadith."[9] He authored some 150 works on hadith, history, biography, exegesis, poetry, and the Shafi'i school of jurisprudence, the most valued of which being his commentary of Sahih al-Bukhari, titled Fath al-Bari.[13] Both of his parents died in his infancy, and he and his sister, Sitt ar-Rakb, became wards of his father's first wife's brother, Zaki ad-Din al-Kharrubi, who enrolled Ibn Hajar in Qur'anic studies when he was five years old."[15] In 1397, at the age of twenty-five, Al-'Asqalani married the celebrated hadith expert Uns Khatun, who held ijazat from 'Abdur-Rahim al-'Iraqi and gave public lectures to crowds of 'ulama', including as-Sakhawi.According to him, Ibn Hajar authored many of his works during the early stages of his career, and he regretted not having the opportunity to revise or refine them to his satisfaction.