"Shiism in Sunnism" is a scholarly analysis of the deep-rooted connections between Shia and Sunni Islam, tracing the historical, theological, and jurisprudential intersections between the two traditions. The book examines how certain Sunni scholars, hadith collections, and spiritual practices reflect influences from Shia thought, particularly regarding the status of Ahlul Bayt (AS), Imamah, and concepts of justice. Through historical evidence, narrations, and scholarly discussions, this book provides a nuanced perspective on the commonalities that exist despite sectarian differences, encouraging greater understanding and dialogue.