Ihram/ Ahram:-                

       Ihram clothing (also spelt Ahram) includes men's and women's garments worn by Muhammadans during the Ihram pilgrimage (Hajj).

        Men's garments consist of two white unhemmed sheets (usually towelling material) and are universal in appearance. The top is draped over the torso and the bottom is secured by a belt; plus a pair of sandals.

       Women's clothing, however, varies considerably and reflects regional as well as religious influences.

       White Ihram clothing is intended to make everyone appear the same, as in the eyes of Allah there is no difference between a prince and a pauper when everyone is dressed equally. There are also certain behaviors that are expected and forbidden once ihram is donned.

       Although it is simply an item of clothing to be worn during the pilgrimage, there are many competing views on the proper wearing of ihram. For example, the exact number of days a pilgrim is required to wear ihram varies according to the type of pilgrimage the individual is performing.

Sahih Al-Bukhari HadithHadith 6.39        Narrated byAl Bara
In the Pre-Islamic Period when the people assumed Ihram, they would enter their houses from the back. So Allah revealed: 
"And it is not righteousness that you enter houses from the back, but the righteous man is he who fears Allah, obeys His Orders and keeps away from what He has forbidden. So enter houses through their doors."      (2.189)

       *** Like every other tradition and fetish in Muhammadanism, Ihram was a pagan one that was 'Islamised' by Muhammad***