LaBella OU80 oud strings. This set is one of the most popular sets for Turkish ouds. It's also been used successfully on Arabic (60+cm scale) ouds, with CFAdgc' tuning.
On shorter Arabic ouds (under 61cm), many people like to use slightly heavier nylon courses, around .024-.025 for c' and .029-.030 for g.
Rectified nylon .022, .028Sliver Wound .025, .030, .034, .042