What are two kinds of sales that the Prophet Muhammad (saw) forbade?
 Narrated Abu Huraira:                     Allah's Apostle forbade two kinds of sales, two kinds of dresses, and two prayers. He forbade offering prayers after the Fajr prayer till the rising of the sun and after the `Asr prayer till its setting. He also forbade "Ishtimal-Assama [??] " and "al-Ihtiba" in one garment in such a way that one's private parts are exposed towards the sky. He also forbade the sales called "Munabadha" and "Mulamasa." (See Hadith No. 354 and 355 Vol. 3).