It is narrated from Sayyiduna Salman al-Farisi (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "No people raise their palms to Allah, the Mighty and Majestic, asking Him for something, except that it is a duty upon Allah to place in their hands what they asked for."
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 6117