Sheikhul Islam Shihāb al-Dīn Abū al-ʿAbbās Aḥmad ibn Muḥammad ibn ʿAlī ibn Ḥajar al-Haytamī al-Makkī al-Anṣārī known as Ibn Hajar al-Haytami al-Makki (Arabic: ابن حجر الهيتمي المكي) was a renowned Sunni Egyptian scholar. He was the leading jurist of the Shafi'i school of thought, a mujtahid, muhaddith, historian and theologian. He came from the Banu Sa'd tribe who settled in the Al-Sharqiah province in Egypt. Ibn Hajar was specialized in Islamic Jurisprudence and well known as a prolific writer of the Shâfi'î school. With Shihab al-Din al-Ramli, he represents the foremost resource for fatwa (legal opinion) for the entire late Shâfi‘î school. Source: Wikipedia (en)