Then there is another matter for the tahajjud that not everyone knows, and that is that no one will reap the fruit of conversing with tahajjud and acquire his knowledge except the one for whom the night prayer is a voluntary prayer. As for someone whose obligatory prayer is incomplete, it will complete his voluntary prayers. If the obligatory prayers take up the voluntary voluntary prayers of the muhajjud servant, there is no voluntary prayer left for him and there is no voluntary prayer left for him. Whether he is a Muhaajjud or performs a voluntary prayer, he does not attain the state of voluntary prayers, their knowledge, or their manifestations, so know that.