A [...] figure illustrating the same theme is the prophet Muhammed [570-632], who has married his first wife, Khadijah, when she was around 40 years of age and he was 25. At her death, Muhammed seemed inconsolable, and his friends advised him to marry again so that he might more easily overcome his grief. Although reluctant to agree, the prophet eventually married Ayesha, a young prepubertal girl. It was said that just watching her play with her dolls proved to be a consolation to him. Most islamic authorities agree the marriage was not consummated until Ayesha began to menstruate, the traditionally acceptable time for intercourse, but there was still a marriage to a girl that many say was only 7 (Bullough, 1973)
Bullough V. The subordinate sex Urbana: University of Illinois Press, 1973