| Religion: | Islam |
| Murabit al-Hajj | |
| Birth Date: | 1913 |
| Jurisprudence: | Maliki |
| Creed: | Ashari |
| Sect: | Sunni |
| Spouse: | Maryam Bint Bwayba |
| Region: | Africa |
| Resting Place: | Mauritania |
| Occupation: | Islamic scholar |
| Children: | Shaykh Abdur Rahman ould al-HajjShaykh Tahir ould al-HajjSidi Muhammad Mahmoud ould al-Hajj |
Muhammad Ould Fahfu al-Massumi (c. 1913[1] – July 17, 2018[2]), Sidi Muhammad Bin Salik Ould Fahfu al-Amsami, better known as Murabit al-Hajj[3] was a Mauritanian Islamic scholar and Wali of Allah, who devoted his life to worship, learning and teaching Islamic sciences. Teachers and students from around the world would often travel to study under his guidance. Based in a remote village in Mauritania, he trained hundreds if not thousands of scholars, including Sh. Hamza Yusuf.[4]
In the 1930s, Sidi Salik Ould Fahfu travelled to Mecca on foot to perform the Hajj; when he returned, he was given the title, Murabit al-Hajj.[5]
In 2016, he was selected by The Royal Islamic Strategic Studies Centre amongst 'The 500 Most Influential Muslims'.[6]
He was married to Maryam Bint Muhammad al-Amin Ould Muhammad Ahmad Bwayba Maryam Bint Bwayba, who memorized the entire Qur’an as well as the basic Maliki texts and Imam al-Nawawi's book of prayers and supplications (Kitab al-Adhkar).[7]