The skill of Ibn Hajar

Ibn Hajar gathered the parties and arranged them in the manner of Al -Hafiz Abi Al -Hajjaj Al -Mazy and his arrangement, as he stated in his introduction, and while a statement of his method comes in mentioning the hadiths and narrating the chain of narrators.
Shihab al-Din Abu al-Fadl Ahmad ibn Ali ibn Muhammad ibn Muhammad ibn Ali ibn Mahmoud ibn Ahmad ibn Ahmad al-Kinani al-Asqalani, then al-Masri al-Shafi'i (Shaban 773 AH/1371 AD - Dhul-Hijjah 852 AH/1449 AD), hadith scholar and Muslim scholar, Shafi'i school of thought, known by several titles, including Sheikh of Islam and Commander of the Faithful in Hadith, (1) Originally from the city of Ashkelon, Al-Hafiz Ibn Hajar Al-Asqalani was born in the month of Shaban in the year 773 AH in Fustat. His father died when he was young, so he was raised in the custody of one of his father's guardians, studied science, and took up teaching.