Sahih Muslim 2854
Sahih Muslim · Book 53: The Book of Paradise, its Description, its Bounties and its Inhabitants · The Arrogant Will Enter The Fire, And The Humble Will Enter Paradise
Abu Huraira reported Allah's Messenger (ﷺ) as say- ing:
حَدَّثَنِي سُوَيْدُ بْنُ سَعِيدٍ ، حَدَّثَنِي حَفْصُ بْنُ مَيْسَرَةَ ، عَنِ الْعَلاَءِ بْنِ عَبْدِ الرَّحْمَنِ ، عَنْ أَبِيهِ ، عَنْ أَبِي هُرَيْرَةَ ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " رُبَّ أَشْعَثَ مَدْفُوعٍ بِالأَبْوَابِ لَوْ أَقْسَمَ عَلَى اللَّهِ لأَبَرَّهُ " .
Many a people with dishevelled hair are driven away from the door (but they are so pious) that if they are to swear in the name of Allah, He would definitely fulfil that.