The Division of Spoils and Dishonesty regarding them - Section 1 Mishkat al-Masabih 3990
Arabic hadith text
وَعَنِ ابْنِ عُمَرَ: أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ يُنَفِّلُ بَعْضَ مَنْ يَبْعَثُ مِنَ السَّرَايَا لِأَنْفُسِهِمْ خَاصَّةً سِوَى قِسْمَةِ عَامَّةِ الْجَيْشِ
Translation
Ibn ‘Umar told that God's Messenger used to give to some of the detachments he sent out booty for themselves in particular apart from the division made to the whole army. (Bukhari and Muslim.)