Prayer, being the most effective means, of communication and connection between man and God; has been emphasized here in this verse: ``Guard strictly your prayers, and especially observe the middle prayer.'' Stand up before God with obedience and humility, and let not hot and cold weather, or troubles of the world, or else, attendance to wealth and wife and children, prevent you from doing your important duties. By middle prayer, we understand the NOON PRAYER, when the weather might be very hot and man is tired and hungry.