A limited number of three-year doctoral stipends are available through MUSAΦ. Unless directed otherwise, the admissions committee will consider all applicants for MUSAΦ fellowships. However, applicants are also encouraged to seek out external funding and should indicate whether they have secured funding when applying. There are many foundations in Germany that support doctoral study.
Here is a list of scholarship programs and foundations:
Foreign students should also have a look at the Deutscher Akademischer Austauschdienst (German Academic Exchange Service).