عن ابى هريرة رضى الله عنه ان رسول الله صلى الله عليه وسلم قال:

(قال الله: أنفق يا ابن ادم ، أنفق عليك )

رواه البخارى ومسلم

On the authority of Abu Hurayra ( may Allah be pleased with him ), who said that the Messenger of Allah(may the blessings and peace of Allah be upon him) said: Allah said : 

Spend, O son of Adam, and  I shall spend on you .

It was narrated  by Al Bukhari and Muslim