A person had in mind that when a certain property or building comes onto the market, or comes under his control then, because of the ideal location, etc., business will thrive and he will be successful. The person bids but someone else is successful and the property is gone.
If this person has Tafweez then he will think : I did what was in my capacity to do but it was not in my Taqdeer. It was written in the Taqdeer of the other person, thus he got it. I must search for something else. Allah Ta’ala does not provide rizq (sustenance) through one business house in the world. It is not that I would have succeeded and received my sustenance and livelihood through only that.
The effort, which needs to be made, must then be made. What transpires thereafter is Taqdeer.
Rasulullah (Sallallaahu Alayhi Wasallam) has said : “Strive to acquire what is beneficial for you; seek the aid of Allah; do not lose courage and if a setback overtakes you, do not say : ‘If I had done this then it would have happened like this (i.e. not what had happened).’ Instead say : ‘Allah has ordained this. Whatever He has willed, has happened.’”
If a person fails after having made the correct effort, there is no need to resort to alcohol, drugs and suicide.
Many students succumb to such drastic measures. Some students work and study extremely hard but fail. Due to failure, they sink into such depression that they feel they have to take or inject themselves with drugs, tranquilizers, etc. for sleep. Why ? …Because they failed.
If a person did not make Tadbeer, i.e. did not make a serious and concerted effort and thereafter fails, then he must blame himself. However, generally, we do make a reasonable effort but sometimes still meet with failure. For example : A person is fit and healthy when he started something but later becomes sick and is unable to complete what he undertook.
Tafweez is placing our matters before Allah Ta’ala, handing them over to Him, and trusting completely in Him, believing that there is goodness in whatever Allah Ta’ala has decided. Outwardly, it may appear as if there is some problem that we are faced with, but great wisdom lies in the decisions of Allah.
Taken from this link