'It is written in the Book of 'Ali (AS), 'The believer is tested according to the level of his good deeds, so whoever is sound of faith and good deeds, his ordeals are more intense. And that is because Allah, the Exalted, did not make this life a [source of] reward for a believer, nor a [source of] punishment for a disbeliever. However, he whose faith and deeds are weak, his ordeal is also little.?