Ibn Hajar stated: ‘Al Muhaddith, al Haafidh, he was proficient in the sciences of Hadeeth; the biographies of narrators, the defects of Hadeeth, and the explanations of their wordings. He used to perform a lot of worship and night prayers.

As Suyootee stated: ‘He is the Imaam, the Haafidh, the Muhaddith, the Faqeeh…’

A more detailed biography of his can be found here

Amongst he books he authored:

• Sarh ‘Ilal at Tirmidhee.
• Fat-h al Baaree – an explanation of Saheeh al Bukharee [other than ibn Hajar’s].
• Jaam’ al ‘Uloom wal Hikkam.
• Tafseer Surat al Ikhlaas.
• Tafseer Surat an Nasr.
• Al Qawaa’id al Fiqhiyyah.
• Ahwaal al Quboor.
• Fadl ‘Ilm as Salaf ‘ala ‘Ilm al Khalaf.
• Adh Dhayl ‘ala Tabaqaat al Hanabillah.
• Mukhtasar Seerat ‘Umar.
• At Takhweef min an Naar.
• Al Farq bayn an Naseehah wat Ta’yeer.
• Lataa-if al Ma’aarif.