Hadith 8200

وَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : " لَمْ تَحِلَّ الْغَنَائِمُ لِمَنْ قَبْلَنَا ، ذَلِكَ بِأَنَّ اللَّهَ رَأَى ضَعْفَنَا وَعَجَزَنَا ، فَطَيَّبَهَا لَنَا " .
And the Noble Prophet (peace and blessings be upon him) said: It was not made lawful for anyone before us to use the spoils of war, but when Allah saw our weakness and humility, He made it lawful for us.
Hadith Reference مسند احمد / مسند المكثرين من الصحابة / 8200
Hadith Grading حکم دارالسلام: إسناده صحيح، خ: 3124، م: 1747