It wasnarrated from Abu Hurairah that the Messenger of Allah (ﷺ)said;"None of you should walk in one sandal or in one leather sock.Lethim take them both off or walk in both of them." (FR)
English reference (FR): Vol. 4, Book 32, Hadith 3617 (FR)
Arabic reference (FR): Book 32, Hadith 3748 (FR)