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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:14659 – Abū al-Ḥusayn b. Bishrān > Ismāʿīl al-Ṣaffār > Aḥmad b. Manṣūr > ʿAbd al-Razzāq > Maʿmar > Ibn Abū Ḥusayn

[Machine] The Prophet ﷺ said, "When one of you drinks, let him rinse his mouth and not gargle, for indeed the kidneys are from the water that is swallowed."  

البيهقي:١٤٦٥٩ – أَخْبَرَنَا أَبُو الْحُسَيْنِ بْنُ بِشْرَانَ أنا إِسْمَاعِيلُ الصَّفَّارُ نا أَحْمَدُ بْنُ مَنْصُورٍ نا عَبْدُ الرَّزَّاقِ أنا مَعْمَرٌ عَنِ ابْنِ أَبِي حُسَيْنٍ

أَنَّ النَّبِيَّ ﷺ قَالَ إِذَا شَرِبَ أَحَدُكُمْ فَلْيَمُصَّ مَصًّا وَلَا يَعُبُّ عَبًّا فَإِنَّ الْكِبَادَ مِنَ الْعَبِّ هَذَا مُرْسَلٌ  

See similar narrations below:

Collected by Suyūṭī
suyuti:2029a –
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السيوطي:٢٠٢٩a –

"إذا شَربَ أحدُكم فليَمُصّ مصًّا، ولا يَعُبَّ عبًّا، فإِن الكُبَادَ من الْعَبِّ" .  

[ص] سعيد بن منصور وابن السنى وأبو نعيم معًا في الطب، [هب] البيهقى في شعب الإيمان عن ابن أبي حسين مرسلًا