Riyah bin al-Harith (may Allah have mercy on him) said that Sayyiduna Umar (may Allah be pleased with him) gave judgment concerning the Arabs whom they had taken captive from one another before Islam, and before the Prophet (peace and blessings be upon him) was sent: whoever knows that someone of his household is a slave in one of the tribes of the Arabs, his ransom is two male slaves for a male slave, and two female slaves for a female slave.