(19) بَاب اسْتِحْبَابِ لُبْسِ النَّعْلِ فِي الْيُمْنَى أَوَّلًا وَالْخَلْعِ مِنْ الْيُسْرَى أَوَّلًا وَكَرَاهَةِ الْمَشْيِ فِي نَعْلٍ وَاحِدَةٍ
Abu Huraira reported Allah's Messenger (ﷺ) as saying:
None of you should walk in one sandal; either he should wear the two or should take off the two.
Reference: Sahih Muslim 2097 b
In-book reference: Book 37, Hadith 111
USC-MSA web (English) reference(deprecated numbering scheme): Book 24, Hadith 5232