Sahih Bukhari
Sahih Bukhari Volume 007, Book 072, Hadith Number 746.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 72. Dress
Narrated By Abu Huraira : Allah's Apostle said, "None of you should walk, wearing one shoe only; he should either put on both shoes or put on no shoes whatsoever."