Husayn bin al-Sa'ib bin Abi Lubabah (may Allah have mercy on him) narrates from his father; he said: When Allah accepted the repentance of Sayyiduna Abu Lubabah (may Allah be pleased with him), Sayyiduna Abu Lubabah (may Allah be pleased with him) said: I came to the Messenger of Allah (peace and blessings be upon him) and said to him: O Messenger of Allah! I will leave the house of my people where I committed this sin, and I will give up all my wealth as charity for Allah and His Messenger. The Messenger of Allah (peace and blessings be upon him) said: "O Abu Lubabah! A third (of your wealth) is sufficient for you." The narrator said: So he gave a third of his wealth in charity.
Hadith Referenceالمعجم الكبير للطبراني / باب الراء / 4494