Because it our “ਮਤ” (mind) which has ahankar: the feeling of “ਮੈ” (me) which must go out for “ਤੂੰ“ (waheguru) to settle on. Here is a beautiful wallpaper dedicated to the khalsa panth and for all sikhs celebrated 310th vaisakhi (the birth of khalsa day) on the coming April 14.
