Yahya related to me from Malik from Yahya ibn Sa'id that he heardSaid ibn al Musayyab say, about the girdle worn by some one in ihramunder his clothes, "There is no harm in it if he ties the endstogether as a belt."Malik said, "This is what I like mostout of what I have heard about the matter."
USC-MSA web (English) reference: Book 20, Hadith 13
Arabic reference: Book 20, Hadith 720