Respect For Qibla Direction
Kaaba is the center of all our mosques and holds this position till the day of Judgement on direction of God Himself. Rest of the places/mosques do not hold this status and are in fact directed towards kaaba themselves. Therefore, we out of respect try not to spread legs in its direction irrespective of the location we are residing. But this doesn’t constitute a religious directive and should be considered a matter of etiquette only.