Mishkat al-Masabih 19 Jihad كتاب الجهاد 225

وَعَنْ سَمُرَةَ بْنِ جُنْدَبٍ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «مَنْ يَكْتُمُ غَالًّا فَإِنَّهُ مِثْلُهُ» . رَوَاهُ أَبُو دَاوُد

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.