‘The Brief Letter’ is compiled based on knowledge gained by following various lessons and courses in the Netherlands given by various students of knowledge who studied at various universities, such as the university of Madinah. The final version of the book was written in collabaration with Abou Abdillah Bouchta. The lessons were followed at various organisations, mainly including: ‘Stichting Assidq Tilburg’, ‘Stichting DawahNL’, ‘Moskee Al-Mukaram Rotterdam’, ‘Moskee Al-Karama Amsterdam’.