The Division of Spoils and Dishonesty regarding them - Section 2 Mishkat al-Masabih 4014
Arabic hadith text
وَعَنْ سَمُرَةَ بْنِ جُنْدَبٍ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «مَنْ يَكْتُمُ غَالًّا فَإِنَّهُ مِثْلُهُ» . رَوَاهُ أَبُو دَاوُد
Translation
Samura b. Jundub told that God’s Messenger used to say, “Anyone who conceals one who has been dishonest about booty is like him.Abu Dawud transmitted it.