A’bdullah Ibn Sinaan says:
“I approached Imam Sadiq (a.s.) in the mosque at a time when he had completed his A’sr prayers and was sitting down facing the Qiblah. I asked him:
“Some of the governors and rulers consider us to be trustworthy and thus place their wealth with us, but at the same time, they do not pay their ‘khums’. Do we return their money to them or do we keep it for our use?”
The Imam (a.s.) replied three times,“By the Lord of the Ka’bah! Even if Ibn Muljam, the murderer of my father Ali (a.s.), were to place something in trust with me, I would return it to him whenever he wanted it back.”( Namunah-e-Ma’arif, vol. 1, pg. 354; Bihaar al-Anwaar vol. 15, pg. 149.)