Rubruck, William of, embassy to Mongol K͟hāqān, [222]
Rumanians, Southern, [62], [168]–9
Russia, Mongols in, [239] sqq. See also [Tatars]
Russian rule, Muslims under, [101], [246]–53
Russians under Muslim rule, [240]–4
Rustam, first Muhammadan king of Karthli, [99]
Saʻd b. Abī Waqqāṣ, [13]
Saʻd b. Muʻad͟h, conversion of, [23]–4
Ṣadr al-Dīn, first Muhammadan king of Kashmīr, [292]
Saffāḥ, caliph, [104]