Jalal ad-Din al-Mahalli was a prominent Islamic scholar and theologian from the 15th century, known for his contributions to Islamic jurisprudence and Quranic exegesis. He was born in Egypt and became well-respected for his deep understanding of Shafi'i law, one of the four major schools of Islamic thought. Al-Mahalli is best known for his work on the Tafsir, a commentary on the Quran, which he co-authored with Jalal ad-Din as-Suyuti. His writings have had a lasting impact on Islamic scholarship, and he is often cited for his insights into the interpretation of religious texts.