Belief in AL-QADAR and AL-QADHAH

The sixth condition of true faith is to believe in divine providence(al-Qadar.).
It is necessary  to explain the nature of the free will of a man (al-iradah al juz'iyyah), for without this initial explanation it is sometimes hard to understand the issues of Al-Qadar and Al Qadhah.

 AL-IRADAH AL-JUZ'IYYAH
Al-Iradah al-juz'iyyah is the limited will of authority and wish given to a human being by Allah, the Most Great. However, this limited will power is of great significance, For, if one uses his free will for a good deed, Allah the Most High, creates that worthwhile action. On the other hand, if one makes use of his will power for a bad deed , Allah, the Most High, brings into existence that evil action.For this reason, one enters either heaven or hell according to his or her own free will. Yes, the Creator is solely Allah, the Most High.If Allah wishes not and if He creates not, nothing comes into existence and nothing occurs. A human being is only the one who wishes and works, while Allah the Most Great is the One Who creates.
Al-Iradah al juz'iyyah bears a resemblance to the streeing wheel of an automobile goes in whichever direction the the steering wheel is turned.That is why, one who rebels against the divine orders of Allah the Most Great is by no means in a position to escape liability for the sin by saying "What could I do when Allah had so wished and created....", Yes, Allah had so  wished, but He also had wished for His Slave to obediently use his free will and effort.As a matter of fact, if such a free will didn't exist (i.e  a will of preference), then ALLAH, the Most High, wouldn't have need to give to His slaves the occasion of a final examination, for He would then have forced His slaves to commit either good or evil deeds without their free will. To the contrary, ALLAH, the Most High, is far from ever forcing His Slaves to commit a sin without the involvement of their free will and then punishing them for it.
Some say: "The souls of some prostrated before ALLAH, the Most Great, in pre-existence while those of others did not. It is those whose souls had not prostrated at the time who die as unbelievers(qafirs)." Never by any means can this be true. This baseless allegation in fact shakes foundation os faith(al-iman). In pre-existence there was no opportunity for objection. That was a time when each and every soul willingly prostrated to their creator, when ALLAH the Lord summoned the souls to test their faith with the divine question: "Alastu bi Rabbikum?" (Am I not your Lord? ), to which all the souls unanimously replied:"Bala!" (Yes, O lord! You are our Lord!) thus declaring their allegiance.
Beyond this, some other mistaken thinkers say: "Whatever you do, ALLAH gives divine guidance (al-Hidayah) to whomever he wishes and he gives corruption(al-Dalalah) to whomever he wishes ". This claim is wrong and unjustified as well.Most misinterpret and incorrectly explain the ayah regarding this matter. My teacher and Master (Ustadh), Suleyman Hilmi Tunahan Efendi (May ALLAH be pleased with him) has interpreted and explained the ayah related to this issue as follows: "ALLAH  , the Most Great, bestows divine guidance (al-Hidayah) to those who ask for al-Hidayah and He gives corruption (al-Dalalah) to those who demand al-Dalalah."