Badr al-Din al-Ayni

Abū Muḥammad Maḥmūd ibn Aḥmad ibn Mūsā Badr al-Dīn al-ʿAynī, often quoted simply as al-'Ayni was a Sunni Islamic scholar of the Hanafi madh'hab and the Shadhili tariqa. Al-'Ayni is an abbreviation for al-'Ayntābi, referring to his native city. He was an eminent scholar regarded as one of the most influential Hanafi jurist and hadith scholar of his time.