Musannaf Ibn Abi Shaybah

It is narrated from Hazrat Ibn Sirin that Hazrat Jabir bin Al-Hadha, who was a slave of Banu Mujashi', asked Hazrat Ibn Umar (may Allah be pleased with them both) whether zakat is obligatory upon a slave as well. Hazrat Ibn Umar (may Allah be pleased with them both) inquired whether the slave was a Muslim. He replied, "Yes." Hazrat Ibn Umar (may Allah be pleased with them both) said: "On every two hundred dirhams, five dirhams (of zakat) are due."