This article documents the work of Islamic charities and NGOs from diverse backgrounds to develop sets of principles guiding their humanitarian and charitable work, in the framework of the dialogue and cooperation among Islamic NGOs and charities as well as between Islamic and Western humanitarian agencies. The authors look at draft documents that resulted from these processes, and the way these relate to the core principles of humanitarian action. They further follow how the dialogue and cooperation between humanitarian organizations from different backgrounds and origins has influenced the orientation of this debate on humanitarian principles from theory and identity to concrete and shared challenges and concerns.