Abu al-‘Abbas ‘Abdullah bin ‘Abbas(ra) reports: “One day I was riding (a horse/camel) behind the Prophet, peace and blessings be upon him, when he said, ‘Young man, I will teach you some words. Be mindful of God, and He will take care of you. Be mindful of Him, and you shall find Him at your side. If you ask, ask of God. If you need help, seek it from God. Know that if the whole world were to gather together in order to help you, they would not be able to help you except if God had written so. And if the whole world were to gather together in order to harm you, they would not harm you except if God had written so. The pens have been lifted, and the pages are dry.’ ” Related by Tirmidhi