Habib bin Maslamah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) used to give a quarter after the khumus; I think he also said: and a third after the khumus when he returned. In the narration of Abdullah bin Salih (may Allah have mercy on him): When he (peace and blessings be upon him) set out on a military expedition he would give a quarter after the khumus, and when he returned he would give a third after the khumus.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12808