Bulugh al-Maram, Book 1, Hadith 46 (In-Book) ⓘ
In another verson of Abu Da’ud is: “If you perform ablution rinse your mouth”.
وَلِأَبِي دَاوُدَ فِي رِوَايَةٍ: { إِذَا تَوَضَّأْتَ فَمَضْمِضْ } (51). 2 - صحيح. سنن أبي داود (144).
also referenced under: Book 1, Hadith 45 (English)