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.
darimi:214Muḥammad b. ʿUyaynah > Abū Isḥāq al-Fazārī > Layth > Ayyūb > Ibn Sīrīn

[Machine] "A man who adopts an innovation shall refer back to the Sunnah."  

الدارمي:٢١٤أَخْبَرَنِي مُحَمَّدُ بْنُ عُيَيْنَةَ عَنْ أَبِي إِسْحَاقَ الْفَزَارِيِّ عَنْ لَيْثٍ عَنْ أَيُّوبَ عَنِ ابْنِ سِيرِينَ قَالَ

«مَا أَخَذَ رَجُلٌ بِبِدْعَةٍ فَرَاجَعَ سُنَّةً»