Wikipedia
Al-Bayhaqi
'''Abu Bakr Ahmad ibn Husayn Ibn 'Ali Ibn Moussa al-Khosrojerdi al-Bayhaqi ( Arabic) ''', البيهقي also known as Imam Al-Bayhaqi was born 994 CE/384AH in the small town of Khusraugird near Sabzevar, then known as Bayhaq, in Khurasan. During his lifetime, he became a famous Sunni hadith expert, following the Shafi'i school in fiqh and the Ash'ari school of aqeedah.