Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings be upon him) said: "I fear most for you regarding this: when Allah will bring forth the blessings of the earth for you." It was asked, "What are the blessings of the earth?" He replied, "The glitter and glamour of the world." Upon this, a companion asked the Messenger of Allah (peace and blessings be upon him), "Can evil be produced from good?" The Messenger of Allah (peace and blessings be upon him) remained silent at this, and we thought perhaps revelation was being sent down to him. After that, he began to wipe his forehead and asked, "Where is the questioner?" The questioner said, "Present." Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) said: When the solution to this question became clear to us, we praised that person. The Messenger of Allah (peace and blessings be upon him) said: "Only good is produced from good. But this wealth is lush and sweet (like green grass), and whatever grows in the spring season destroys or nearly destroys those animals who eat it greedily, except for the animal that eats to its fill; when it has eaten and its sides are full, it turns its face towards the sun, chews the cud, then urinates and defecates, and then returns to eat again. And this wealth is also very sweet. Whoever acquires it rightfully and spends it rightfully, then it is the best means. And whoever acquires it unlawfully is like the person who keeps eating but is never satisfied."