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:15707Abū ʿAbdullāh al-Ḥāfiẓ Fī Ākharīn > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > al-Rabīʿ b. Sulaymān > al-Shāfiʿī > Sufyān > Abū al-Zinād > Saʾalt Saʿīd b. al-Musayyib > al-Rajul Lā Yajid Mā Yunfiq > Āmraʾatih > Yufarraq Baynahumā > Abū al-Zinād Qult Sunnah > Saʿīd Sunnah > al-Shāfiʿī And al--Adhī Yushbih Qawl Saʿīd Sunnah

[Machine] To be a sunnah (way) of the Messenger of Allah ﷺ .  

البيهقي:١٥٧٠٧وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ فِي آخَرِينَ قَالُوا نا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ أنا الرَّبِيعُ بْنُ سُلَيْمَانَ أنا الشَّافِعِيُّ أنا سُفْيَانُ عَنْ أَبِي الزِّنَادِ قَالَ سَأَلْتُ سَعِيدَ بْنَ الْمُسَيِّبِ عَنِ الرَّجُلِ لَا يَجِدُ مَا يُنْفِقُ عَلَى امْرَأَتِهِ قَالَ يُفَرَّقُ بَيْنَهُمَا قَالَ أَبُو الزِّنَادِ قُلْتُ سُنَّةً قَالَ سَعِيدٌ سُنَّةً قَالَ الشَّافِعِيُّ وَالَّذِي يُشْبِهُ قَوْلَ سَعِيدٍ سُنَّةً

أَنْ تَكُونَ سُنَّةً مِنْ رَسُولِ اللهِ ﷺ