Asking Permission

Bukhari :: Book 8 :: Volume 74 :: Hadith 300

Narrated Abu Sa'id Al-Khudri:

The Prophet forbade two kinds of dresses and two kinds of bargains; Ishtimal As-Samma and Al-Ihtiba in one garment with no part of it covering one's private parts. (The two kinds of bargains were:) Al-Mulamasa and Al-Munabadha.