The 4 Sunni universities of jurisprudence or fiqh (Hanafi, Shafi'i, Maliki and Hanbali), have differing stances on the problem. Islamic jurisprudence sets restrictions on the master's appropriate to sexual intercourse with his female slave. Concubinage, which was a sexual partnership amongst a Muslim male and an single female slave whom he owned, was the only lawful sexual connection outdoors relationship in Islamic regulation.