And your Lord says, "Call upon Me; I will respond to you." Indeed, those who disdain My worship will enter Hell [rendered] contemptible. [Quran 40:60]Ibn al-Qayyim said: Duas and ta'awwudhaat [prayers seeking refuge with Allaah] are like a weapon, and a weapon is only as good as the person who is using it; it is not merely the matter of how sharp it is. * If the weapon is perfect and free of faults, and* the arm of the person using it is strong, and* there is nothing stopping him, Then he can lay waste the enemy. But if any of these three features is lacking, then the effect will be lacking accordingly." (al-Daa' wa'l-Dawaa', p. 35). If the weapon is perfect and free of faults, [if dua is made with all its etiquettes ]...the arm of the person using it is strong, [If Iman of the person is strong] ... there is nothing stopping dua [ things like consuming haram wealth or breaking the ties of kinship]________________A collection of Islamic dua from Quran and sunnah