"God says (in the Holy Quran): "God commands you to pay back the 'amanat' to their owners" (Surah 4, Ayat 58). "If any one of you were to deposit something with some one then let the one with whom the things are deposited return the deposit to the its depositor." (Surah 2, Ayat 283). "O momins, do not commit breach of trust in your dealings with God and the Prophet and do not abuse the trust in the matters of 'amanats' knowingly." (Surah 8, verse 27).
 
The Prophet says (in ahadith): "Do not commit breach of the trust, do not go to excess and do not be deceitful." "It is your duty to return the 'amanat'. He who deceives us disowned by us." "It is unlawful for you to shed the blood of one another and to misappropriate the properties of one other."
 
(Hazrat) Ali, be the greeting of God on him, says to some one of his followers, "Pay back what has been deposited with you and do not commit the breach of trust in your dealings even with those who have abused your trust".
 
These quotations from the Quran and the traditions make it clear to us, that God, the Prophet, and the Imams have ordered us in unequivocal terms to return the deposits to their owners regardless of their being our friends or foes. It is the duty of a 'Momin' to pay back the 'amanat'. This keeps up his credit, guards his religion and purifies his soul.
 
This chapter is applicable to all classes of the followers of the Imams and even to non-followers. For, return of 'amanat' to its owner and sincerity are incumbent on every Muslim. The Prophet says, "Religion means sincerity to God, the Imams and the Momins in general. Lack of sincerity of God and the Imams is impermissible. Thus, sincerity to the Imams and returns of the 'amanat' to them are the best things that we have been enjoined to do."
 

Full citation: Selections from Qazi Noaman's Kitab-ul-Himma fi Adabi Ataba-el-a'emma or Code of Conduct for the Followers of Imam. Translated into English by Prof. Jawad Muscati (Ustad-Fil-Uloomm-Il-Arabbiya) and Khan Bahadur Prof. A. M. Moulvi, M.A. Published by The Shia Imami Ismailia Association for Africa. 1950.