Al-Husayn ibn Sa'id, from Ibn Abi Umayr, from Sayf ibn Amirah, from Abu Bakr al-Hadrami, from al-Mu'alla: Imam عليه السلام said: "Take the wealth of the ‘hostile opponent’ (nasibi) wherever you find it, and send to us (Ahlul Bayt عليه السلام) the fifth (khums)."