Sunan Abi Dawud 3319
سنن أبي داود#3319SahihNarrated Ka'b ibn Malik: Ka'b ibn Malik said to AbuLubabah; or someone else whom Allah wished; or to the Prophet (ﷺ): To make my repentance complete I should depart from the house of my people in which I fell into sin, and that I should divest myself of all my property as sadaqah (alms). He said: A third (of your property) will be sufficient for you
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih Isnaad
Muhammad Muhyi Al-Din Abdul HamidSahih Isnaad
Shuaib Al ArnautHasan Lighairihi
Zubair Ali ZaiHasan
In-book reference: 22:78