Mishkat al-Masabih
Mishkat al-Masabih 4411
Arabic hadith text
وَعَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا يَمْشِي أَحَدُكُمْ فِي نعلٍ واحدةٍ ليُحفيهُما جَمِيعًا أَو لينعلهما جَمِيعًا»
Translation
He reported that the Messenger of Allah ﷺ said, “None of you should walk wearing only one sandal. Either wear both or take both off.”