Dâvûd-i Kayserî was born in Kayseri as a member of a family originally from the cityof Sâve, close to Tehran, he saw his first education in Anatolia and then went to Egypt.Returning to Anatolia after the Egyptian voyage, Kayserî has spent more than ten yearsof his life in the famous Rab'-i-Rashîdî district (campus) of Tabrîz. Despite hisadvanced age, he is both a student and a teacher here. He takes Fusus and Ta'vîlâtlessons from Abd al-Razzaq al-Kāshânî, who is one of the important scholars of theperiod. He wrote the sharh of Fusus, which was very popular among Sufi circles, and afew of his works in the hankāh in this campus. The founder of Hankāh, İlhanlı vizierRashîdiddîn Fazlullah and the son of Rashîduddîn, Gıyâsaddîn Muhammad paid greatattention to the people of science, in this context, they gave great importance to bothKaysari and Kāshânî and prepared a good environment for them for their scientificactivities. Thus, both scholars wrote many of their works by dedicating to him. In thisstudy, after giving some information about the life of Kaysari, we will try to examinethe relationship between the mentioned people.