Ali ibn Mahziyar said: Abu Ali ibn Rashid said to me: I (narrator) said to Imam عليه السلام: “You commanded me to undertake your affair and to take your right (khums), so I informed your followers of that. Then some of them said to me, ‘And what thing is his right?’ But I did not know what to answer him. Imam عليه السلام said: "The fifth (khums) is obligatory upon them." So I (narrator) asked: “In what thing?” Imam عليه السلام said: "In their goods and their estates." He (narrator) said: “And is it upon the merchant and the craftsman who works with his hand?” Imam عليه السلام said: "That is when it is possible for them after their expenses."