Sahih Muslim — The Book of Virtue, Enjoining Good Manners, and Joining of the Ties of Kinship — Hadith No: 6682
Translation
Abu Huraira reported Allah's Messenger (may peace he upon him) as saying:Many a person with disheveled hair and covered with dust is turned away from the doors (whereas he is held in such a high esteem by Allah) that if he were to adjure in the name of Allah (about anything) Allah would fulfil that