Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:13179ʿAbdullāh b. Yūsuf > Abū Saʿīd b. al-Aʿrābī > Yūsuf b. Yaʿqūb al-Qāḍī > ʿAbd al-Wāḥid b. Ghiyāth > Ḥammād b. Salamah > ʿAmr b. Shuʿayb from his father from his grandfather > Rasūl Allāh Ṣalá

[Machine] The Messenger of Allah ﷺ said, "I do not have any share of this booty except for a fifth, and the fifth is to be returned to you." Al-Shafi'i, may Allah have mercy on him, said, "By 'the fifth', it means its rightful share from the fifth, and by 'to be returned to you', it means in your best interest."  

البيهقي:١٣١٧٩أَخْبَرَنَا عَبْدُ اللهِ بْنُ يُوسُفَ أنبأ أَبُو سَعِيدِ بْنُ الْأَعْرَابِيِّ ثنا يُوسُفُ بْنُ يَعْقُوبَ الْقَاضِي ثنا عَبْدُ الْوَاحِدِ بْنُ غِيَاثٍ ثنا حَمَّادُ بْنُ سَلَمَةَ عَنْ عَمْرِو بْنِ شُعَيْبٍ عَنْ أَبِيهِ عَنْ جَدِّهِ ؓ قَالَ

قَالَ رَسُولُ اللهِ ﷺ لَيْسَ لِي مِنْ هَذَا الْفَيْءِ إِلَّا الْخُمُسَ وَالْخُمُسُ مَرْدُودٌ فِيكُمْ قَالَ الشَّافِعِيُّ رَحِمَهُ اللهُ يَعْنِي بِالْخُمُسِ حَقُّهُ مِنَ الْخُمُسِ وَقَوْلُهُ مَرْدُودٌ فِيكُمْ يَعْنِي فِي مَصْلَحَتِكُمْ