Sunan an Nasai
3823
Sahih+2

Abdullah bin Ka'b bin Malik narrated from his father, that he said to the Messenger of Allah -when his repentance was accepted:"O Messenger of Allah! I want to give all my wealth in charity for Allah and His Messenger." The Messenger of Allah said to him: "Keep some of your wealth for yourself; that is better for you

SahihAbu Ghuddah
SahihAl-Albani