Sunan Ibn Majah
3617
Hasan Sahih+3

It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said; “None of you should walk in one sandal or in one leather sock. Let him take them both off or walk in both of them.”

Hasan SahihAl-Albani
Hasan SahihMuhammad Fouad Abd al-Baqi