It is narrated from Hazrat Imran bin Husain (may Allah be pleased with him) that he asked the Prophet (peace and blessings be upon him) about praying while sitting. The Prophet (peace and blessings be upon him) said: Performing prayer while standing is the most virtuous; the reward for praying while sitting is half of that for praying while standing, and the reward for praying while lying down is half of that for praying while sitting.