وَحَدَّثَنِي مَالِكٌ، عَنِ ابْنِ شِهَابٍ، عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ، أَنَّهُ قَالَ سَمِعْتُ رَجُلاً، يَسْأَلُ عَبْدَ اللَّهِ بْنَ عَبَّاسٍ عَنِ الأَنْفَالِ، فَقَالَ ابْنُ عَبَّاسٍ الْفَرَسُ مِنَ النَّفَلِ وَالسَّلَبُ مِنَ النَّفَلِ ‏.‏ قَالَ ثُمَّ عَادَ الرَّجُلُ لِمَسْأَلَتِهِ فَقَالَ ابْنُ عَبَّاسٍ ذَلِكَ أَيْضًا ثُمَّ قَالَ الرَّجُلُ الأَنْفَالُ الَّتِي قَالَ اللَّهُ فِي كِتَابِهِ مَا هِيَ قَالَ الْقَاسِمُ فَلَمْ يَزَلْ يَسْأَلُهُ حَتَّى كَادَ أَنْ يُحْرِجَهُ ثُمَّ قَالَ ابْنُ عَبَّاسٍ أَتَدْرُونَ مَا مَثَلُ هَذَا مَثَلُ صَبِيغٍ الَّذِي ضَرَبَهُ عُمَرُ بْنُ الْخَطَّابِ ‏.‏ قَالَ وَسُئِلَ مَالِكٌ عَمَّنْ قَتَلَ قَتِيلاً مِنَ الْعَدُوِّ أَيَكُونُ لَهُ سَلَبُهُ بِغَيْرِ إِذْنِ الإِمَامِ قَالَ لاَ يَكُونُ ذَلِكَ لأَحَدٍ بِغَيْرِ إِذْنِ الإِمَامِ وَلاَ يَكُونُ ذَلِكَ مِنَ الإِمَامِ إِلاَّ عَلَى وَجْهِ الاِجْتِهَادِ وَلَمْ يَبْلُغْنِي أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ مَنْ قَتَلَ قَتِيلاً فَلَهُ سَلَبُهُ ‏"‏ ‏.‏ إِلاَّ يَوْمَ حُنَيْنٍ ‏.‏

Yahya related to me from Malik from Ibn Shihab that al-Qasim ibnMuhammad said that he had heard a man asking ibn Abbas about booty.Ibn Abbas said, "Horses are part of the booty and personal effects areas well." Then the man repeated his question, and Ibn Abbasrepeated his answer. Then the man said, "What are the spoils which He,the Blessed, the Exalted, mentioned in His Book?" He kept on askinguntil Ibn Abbas was on the verge of being annoyed, then Ibn Abbassaid, "Do you know who this man is like? Ibn Sabigh, who was beaten byUmar ibn al-Khattab because he was notorious for asking foolishquestions." Yahya said that Malik was asked whether someonewho killed one of the enemy could keep the man's effects without thepermission of the Imam. He said, "No one can do that without thepermission of the Imam. Only the Imam can make ijtihad. I have notheard that the Messenger of Allah, may Allah bless him and grant himpeace, ever said, 'Whoever kills someone can have his effects,' on anyother day than the day of Hunayn." 3 Translation Not Available

Book reference: Muwatta Imam Malik Book 21 Hadith 980
Web reference: Muwatta Imam Malik Book 21 Hadith 19