He became famous for his statements containing the basic views of the Shafi sect.
(994-1066) Arab fiqh scholar. He gained fame with his comments on hadith and his explanations containing the basic views of the Shafi'i sect. He was born in the Beyhak region near Nishapur and died in Nishapur. His real name is Abu Bakr Ahmed al-Bayhaqī. He first studied in the place where he was born, then expanded his knowledge by going on trips that lasted for years, attending the meetings of the famous scholars of the provinces he traveled to, and listening to their lectures. Initially, he studied Ash'arik kalam, and when he returned to Nishapur, he read the works containing the thoughts of Imam Shafii, the founder of the Shafi'i sect, and gave lectures on them.
Abu Bakr Ahmad ibn Husayn al-Bayhaqi also known as Imām al-Bayhaqī, was a Sunni polymath widely known for being the foremost leading hadith master in his age, leading fuquha of the Shafi'i school, leading authority on the foundation of doctrine, meticulous, a devoted ascetic and known as one of the proponent defenders of the Ash'ari school.
Beyhakî concentrated all his studies on Hadith and the principles of the Shafi'i sect, added new interpretations to them, and edited the Hadith magazine called Kitabü'l-Sünenü'l-Kebir, which was used as a textbook in madrasahs for centuries. He collected most of the hadiths in this work in the Arab countries he visited, especially in the regions where the Prophet lived, and arranged them according to their subjects. There is also a summary of this work. This ten-volume work, which includes the principles of the Shafi'i sect, is considered the only source in its field. Dela'ilü'n-Nübüvve is a work about the Prophet's "prophethood" (prophecy) and "risalet" (embassy).