About “Al-Sunan al-Wusta”
Al-Sunan al-Wusta, also known as Marifat al-Sunan wa-al-Athar, is a hadith work compiled by Imam al-Bayhaqi. It is a multi-volume book that gathers textual evidences supporting the legal rulings of Shafi'i jurisprudence. The work serves as a collection of hadiths used to justify and explain the principles of this school of thought. (Summary adapted from Wikipedia, CC BY-SA 4.0.)
More by Aḥmad ibn al-Ḥusayn Bayhaqī
Some summaries adapted from Wikipedia, CC BY-SA 4.0.