The greater the ordeal and test, the greater the reward and recompense. Do you not see that Allah, the Praiseworthy, tested our precursors from the time of Adam, peace be upon him, to the last generations in this world, with [the creation of] stones that neither harm nor benefit, nor do they see or hear, and He made from them His sacred House, which He made a standing place for people?! But Allah tries His servants with various ordeals, and obligates them with various forms of struggle, and tests them with various dreads, in order to eradicate vanity from their hearts and instil humility in their souls and that this may open the doors to His favour and the feasible means to His forgiveness.'