The prophet of Islam. Muslims believe the 古兰经 (Quran) was revealed to him by God; born in Mecca, he united much of Arabia under Islam before his death in Medina.
Before 穆罕默德 became standard, Chinese texts wrote his name 马哈麻 or 马合麻. Chinese Muslims usually call him 穆圣, 'the Sage Mu', from the first syllable of his name.