Ma'n bin Yazid narrated, 'I heard the Messenger of Allah (ﷺ) say, "Additional booties (extra to the allotted share) are to be distributed only after the fifth has been kept aside." Related by Ahmad and Abu Dawud .At Tahawi graded it as Sahih. (FR)
English reference (FR): Book 11, Hadith 1331 (FR)
Arabic reference (FR): Book 11, Hadith 1304 (FR)