Sunan an-Nasa'i al-Kubra 4428
ʿAmr b. Yaḥyá b. al-Ḥārith > Maḥbūb > Abū Isḥāq > Zāʾidah > ʿAbd al-Malik b. Abū Sulaymān
In his words, "Whatever you have gained is for Allah, and for the Messenger." (Al-Anfal 41). He said that the fifth of Allah and the fifth of His Messenger ﷺ are one. The Messenger of Allah ﷺ carries from it, gives from it, places it wherever he wants, and uses it as he wishes.
أَخْبَرَنَا عَمْرُو بْنُ يَحْيَى بْنِ الْحَارِثِ قَالَ حَدَّثَنَا مَحْبُوبٌ قَالَ أَخْبَرَنَا أَبُو إِسْحَاقَ عَنْ زَائِدَةَ عَنْ عَبْدِ الْمَلِكِ بْنِ أَبِي سُلَيْمَانَ عَنْ عَطَاءٍ
فِي قَوْلِهِ {أَنَّمَا غَنِمْتُمْ مِنْ شَيْءٍ فَأَنَّ لِلَّهِ خُمُسَهُ وَلِلرَّسُولِ} [الأنفال 41] قَالَ خُمْسُ اللهِ وَخُمْسُ رَسُولِهِ ﷺ وَاحِدٌ كَانَ رَسُولُ اللهِ ﷺ «يَحْمِلُ مِنْهُ وَيُعْطِي مِنْهُ وَيَضَعُهُ حَيْثُ شَاءَ وَيَضَعُ بِهِ مَا شَاءَ»