Ahmad ibn Hanbal (780–855 CE) was a renowned Islamic scholar and jurist, considered one of the founders of the Hanbali school of jurisprudence. Born in Baghdad, Iraq, he dedicated his life to the study of Islamic law and Hadith. Ibn Hanbal's adherence to traditional Islamic teachings, particularly in matters of theology and law, earned him widespread respect among his contemporaries. He played a crucial role in preserving and transmitting the Hadith of the Prophet Muhammad, compiling one of the six major collections of Hadith, known as "Musnad Ahmad ibn Hanbal." Despite facing persecution for his beliefs, particularly during the period of theological debate known as the "Mihna," Ibn Hanbal remained steadfast in his convictions. His emphasis on adherence to the Quran and the Sunnah (traditions) of the Prophet Muhammad continues to influence Islamic jurisprudence and scholarship, making him one of the most influential figures in Sunni Islam.