What did Ibn `Umar say about how one should properly sit during prayer according to Prophet Muhammad (saw)?
 Narrated `Abdullah bin `Abdullah:                     I saw `Abdullah bin `Umar crossing his legs while sitting in the prayer and I, a mere youngster in those days, did the same. Ibn `Umar forbade me to do so, and said, "The proper way is to keep the right foot propped up and bend the left in the prayer." I said questioningly, "But you are doing so (crossing the legs)." He said, "My feet cannot bear my weight."