The Kitáb-i-Aqdas - The Most Holy Book
Index term: Trust
k33.
O people of Bahá! It is incumbent upon each one of you to engage in some occupation -- such as a craft, a trade or the like. We have exalted your engagement in such work to the rank of worship of the one true God. Reflect, O people, on the grace and blessings of your Lord, and yield Him thanks at eventide and dawn. Waste not your hours in idleness and sloth, but occupy yourselves with what will profit you and others. Thus hath it been decreed in this Tablet from whose horizon hath shone the day-star of wisdom and utterance. The most despised of men in the sight of God are they who sit and beg. Hold ye fast unto the cord of means and place your trust in God, the Provider of all means.
k153.
Should anyone wax angry with you, respond to him with gentleness; and should anyone upbraid you, forbear to upbraid him in return, but leave him to himself and put your trust in God, the omnipotent Avenger, the Lord of might and justice.
k160.
Promote ye the development of the cities of God and His countries, and glorify Him therein in the joyous accents of His well-favoured ones. In truth, the hearts of men are edified through the power of the tongue, even as houses and cities are built up by the hand and other means. We have assigned to every end a means for its accomplishment; avail yourselves thereof, and place your trust and confidence in God, the Omniscient, the All-Wise.
q96.
 
Question: Concerning the exchange of property held in trust for cash or other forms of property, to guard against depreciation or loss.
Answer: Regarding the written question on the exchange of property held in trust to guard against depreciation and loss, such exchange is permissible on condition that the substitute will be equivalent in value. Thy Lord, verily, is the Expounder, the Omniscient, and He, truly, is the Ordainer, the Ancient of Days.