What did the Prophet Muhammad (peace be upon him) advise Ka'b bin Malik to do with his property when he asked to give it away for the acceptance of his repentance?
 Narrated Ka`b bin Malik:                     I said, "O Allah's Apostle! For the acceptance of my repentance I wish to give all my property in charity for Allah's sake through His Apostle ." He said, "It is better for you to keep some of the property for yourself." I said, "Then I will keep my share in Khaibar."