Breach of trust denounced in the traditions

The Holy Prophet (s.a.w.s.) says: 
"One who embezzles a property in his charge and does not deliver it to its owner and dies in such a condition, then he does not die in my community (he does not die a Muslim). When such a person meets Allah, He shall be infuriated with him. And one who purchases an embezzled property knowing that it is embezzled is just like the (actual) embezzler." 
(Wasaelush Shia)

Another tradition states, 
"And it will be ordered to throw him in the fire; he will remain in the deep pit of Hell forever." 
(Wasaelush Shia)

The Prophet (s.a.w.s.) is also reported to have remarked, 
"If one is Muslim, he must not practice deceit and defalcation. For I have heard from Jibraeel that deceit and cheating belong to hell."

Then he (s.a.w.s.) continued, 
"One who cheats a Muslim is not from us, and one who embezzles the believers is (also) not from us." 
(Wasaelush Shia)

The following tradition is recorded in the book Al Kafi: 
"There are three qualities that are the sign of a hypocrite even if he prays and fasts and calls himself a Muslim: lying, violating promises and defalcation."

This tradition had already been mentioned in the previous discussion.

Amirul Momineen Ali (a.s.) says; 
"There are four things and even if one of them enters a house it causes economic catastrophe and it never remains blessed: defalcation, thievery, wine and adultery. 
(Wasaelush Shia)

Thus if one or more members of a household indulge in one of these sins, such a household is deprived from divine blessings. It brings about an economic ruin. It must also be clarified, however, that the house of the thief is deprived of 'barakat' (divine blessings) and not the site where robbery occurs.

Misappropriation causes misfortune

The Holy Prophet (s.a.w.s.) remarks, 
"Trustworthiness causes one to be self sufficient (financially) and misappropriation causes poverty." 
(Wasaelush Shia)

The narrator says that I said to Imam Ja'far as-Sadiq (a.s.), 
"There is a lady in Madinah, with whom people leave their daughters for training (and education). We have observed that she could maintain herself with so less, but we have never known her to have any financial problem."

Imam Sadiq (a.s.) remarked, 
"It is because she is truthful and trustworthy. These two qualities increase sustenance." 
(Wasaelush Shia)

Another tradition from the same Imam (a.s.) is as follows:
"Do not be deceived by the prolonged sajda and rukoo of a man, they may be a part of his habits (that he could not avoid). See his truth and trustworthiness."

Thus it is these qualities that prove righteousness and piety.

Anyone could be the owner of the entrusted property

We have numerous traditions dealing with this subject. They emphatically state that it is wajib to guard the trust and haraam to misappropriate it, whether the one who entrusts it, is a Muslim or a Kafir. It is even wajib to protect the goods entrusted by a Nasibi (those are openly inimical to Ahlul Bayt a.s.) in spite of the fact that the Nasibi are the worst kind of people.

Hazrat Imam Ja'far as-Sadiq (a.s.) says: 
"Fear Allah! And return the entrusted thing to the owner. Even if the murderer of Ali (a.s.) entrusts me with something, I shall deliver it to him (when he desires)."

Imam (a.s.) also says, 
"Then fear Allah! And guard the trusts (placed by) the white as well as the black (people). Even if the one who entrusts is from the Khwarij or a Syrian (those who hate Ali [a.s.])." That is, even if he is a confirmed enemy of the Ahlul Bayt (a.s.).

A man inquired from Imam Ja'far as-Sadiq (a.s.), 
"Is it allowed to misappropriate the property of a Nasibi?"

Imam (a.s.) replied, 
"Honour the trust of every person who entrusts you with it, or seeks your advice. Even if it is the killer of Imam Husain (a.s.)." 
(Wasaelush Shia)

Another similar narration is as follows:
Husain Shabani says that he asked Imam Ja'far as-Sadiq (a.s.), "One of your followers considers the property and blood of Bani Umayya permissible for himself. He is also in possession of some property entrusted to him by the Bani Umayya?"

Imam (a.s.) replied, 
"Restore the entrusted property to its owner even if they are Majoos (fireworshippers)."

Imam Ja'far as-Sadiq (a.s.) is also reported to have said, 
"Allah has not sent any messenger but with (the order to propagate) truth and restoring of trust, whether of a righteous man or a sinner." 
(Wasaelush Shia)

Muhammad Bin Qasim says that he mentioned to Abul Hasan, Imam Musa al-Kazim (a.s.) regarding the person who had entrusted someone with something valuable. "The trustee is an Arab and he is competent enough not to return the trust. Whereas the one who entrusts is a wretched Khariji (enemy of Ahlul Bayt)?"

Imam (a.s.) said, 
"Tell him to return the trust; because it is a divine trust that he is entrusted with." (Meaning that it is a trust, which is to be restored according to divine command).

Hazrat Imam Zainul Abedin (a.s.) advises his Shias: 
"You must return the trusts when required. By the One who has sent Muhammad (s.a.w.s.) as a messenger with trust, even if the killer of my father Husain (a.s.) had entrusted me with the sword with which he had slain him, I would have delivered it back to him."

The Satan instigates

The greater the importance of a duty in Islamic law, the greater is the effect put in by Shaitan to deviate a person from fulfilling it.

Hazrat Imam Ja'far as-Sadiq (a.s.) says, 
"If a person makes good the trust in his possession, he unties a thousand knots that had tied him to Hell. So, do not be sluggish in delivering trusts. When one becomes a trustee, Iblees orders a hundred of his assistants to follow him so that they may deviate him and suggest him to defalcate. They continue to pursue him till he is doomed. Except the one who is saved by Allah (a.j.)."

Ameen (Trustworthy) - A Title of the Holy Prophet (s.a.w.s.)

Every historian has recorded that even prior to the declaration of his prophethood, the disbelievers of Quraish addressed the Holy Prophet (s.a.w.s.) by the title of 'Ameen'. The disbelievers trusted him to the extent that even though they did not heed his call and did not profess Islam, they deposited their valuables with him. The trust in the Prophet's trustworthiness was not restricted to the Quraish tribe, but was shared by the people of other tribes and areas as well. When these people came toMecca during the Hajj season they used to put their belongings in the safe custody of the Holy Prophet (s.a.w.s.). This continued after the declaration of prophethood. When the Prophet (s.a.w.s.) migrated to Madinah he gave all the things that were in his custody to Hazrat Ali (a.s.) and said: 
"Proclaim loudly, every morning and evening in Mecca that whoever had kept anything with Muhammad (s.a.w.s.) may collect it."