Sheikh Muhammad Abdus Shamad, known by the honorific Datu Sanggul, was an 18th-century scholar revered as a great saint among the Banjar people of South Kalimantan. According to the sources he travelled from the Palembang region of Sumatra to the Tatakan area in search of knowledge, studying under his teacher Datu Suban. He is associated with the work 'Kitab Barencong' and played an important role in the spread of Islam in South Kalimantan; tradition holds him a contemporary of Datu Kalampayan (Muhammad Arsyad al-Banjari). His tomb lies in the village of Tatakan (Muning) in Tapin Selatan, Tapin, and is one of the region's principal pilgrimage sites. No firm date of death is recorded in the sources.