had god given abundant sustenance to his servants they would have certainly rebelled on earth but he sends them a known measure of sustenance as he wills. he is allaware of his servants and watches over them all.
ولو بسط الله الرزق لعباده لبغوا في الأرض ولكن ينزل بقدر ما يشاء إنه بعباده خبير بصير