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:65Abū Bakr > ʿAlī > Yaḥyá b. Ṣāʿid > Muḥammad b. Isḥāq > ʿAmr b. al-Rabīʿ b. Ṭāriq Bihadhā al-Isnād

[Machine] The Messenger of Allah ﷺ said: "Is there not in water and gravel that which purifies it? Or is it the tanning agent?"  

البيهقي:٦٥وَأَخْبَرَنَا أَبُو بَكْرٍ أنبأ عَلِيٌّ قَالَ حَدَّثَنَا يَحْيَى بْنُ صَاعِدٍ ثنا مُحَمَّدُ بْنُ إِسْحَاقَ ثنا عَمْرُو بْنُ الرَّبِيعِ بْنِ طَارِقٍ بِهَذَا الْإِسْنَادِ مِثْلَهُ وَقَالَ زَادَ عَقِيلٌ فِي حَدِيثِهِ فَقَالَ

رَسُولُ اللهِ ﷺ أَلَيْسَ فِي الْمَاءِ وَالْقَرَظِ مَا يُطَهِّرُهَا أَوِ الدِّبَاغُ