Sayyiduna Ibn Umar (may Allah be pleased with them both) said: I heard the Prophet (peace and blessings be upon him) say: "By the One in whose Hand is my soul, the world is more insignificant to Allah than this young goat is to its owners. And if the world were worth even the weight of a mustard seed to Allah, He would not give it to anyone except His friends and His beloved ones from among His creation."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13253