عن ابن عباس، عن النبي صلى الله عليه وسلم قال: الوضوء قبل الطعام وبعده مما ينفي الفقر، وهو من سنن المرسلين (المعجم الأوسط للطبرانی رقم7166)
Hazrat Abdullah bin Abbas رضي الله عنهما reports that Hazrat Rasulullah صلى الله عليه وسلم said, “Washing the hands before and after meals repels poverty, and it is from the Sunnah of all the Ambiyaa عليهم السلام.”
A Beautiful Incident
A pious man narrated that he once owed a debt of three hundred rupees, and due to straitened circumstances, he could not imagine how he could ever be relieved of this burden. One day, while seated in the discourse of an Aalim, he heard him say that the one who washes his hands before and after eating, with the intention of emulating the Sunnah of Rasulullah صلى الله عليه وسلم , will Insha-Allah be relieved of his debts in a short span of time. The pious man implemented the above Sunnah, and through the grace of Allah Ta’ala جل جلاله he was absolved of all his debts in just a few days.
(Source: The Blessed Sunnah of Rasulullah صلى الله عليه وسلم Volume 3 Pg. 128)