Harithah bin Mudarrib narrates: Some people from Egypt came to Sayyiduna Umar bin Khattab (may Allah be pleased with him). They said: We have acquired some land and some slaves, and we wish to pay zakat on them. Sayyiduna Umar (may Allah be pleased with him) said: "I will not do what my two predecessors did not do, until I consult about this matter." Then Sayyiduna Umar (may Allah be pleased with him) consulted the companions of the Prophet (peace and blessings be upon him) about this, and all of them approved it. Sayyiduna Ali (may Allah be pleased with him) remained silent. Sayyiduna Umar (may Allah be pleased with him) said: "O Abu al-Hasan! Why are you not saying anything?" So Sayyiduna Ali (may Allah be pleased with him) said: "The advice these gentlemen have given you is correct, but it is necessary that it should not be a tax that they would have to pay even after you." So Sayyiduna Umar (may Allah be pleased with him) collected ten dirhams for each slave and made it obligatory to provide two jarib of wheat as monthly food. For a horse, he collected ten dirhams and made it obligatory to provide ten jarib of barley as monthly food. For an ordinary horse, he collected eight dirhams and made it obligatory to provide eight jarib of barley as monthly food. For a mule, he collected five dirhams and made it obligatory to give five jarib of barley as monthly food. The narrator named Abu Ishaq says: In the time of Hajjaj, this was collected from us, but our share was not given to us. The Sheikh (Imam Daraqutni) says: "Muqarrif" is a horse that runs slower than a fast horse.