It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that once the Prophet (peace and blessings be upon him) sprained his foot. We went to visit the Prophet (peace and blessings be upon him) and found him praying there. We also joined him and prayed standing. After finishing the prayer, the Prophet (peace and blessings be upon him) said: If I pray standing, then you should also pray standing, and if I pray sitting, then you should also pray sitting, and do not remain standing in the way the people of Persia do with their chiefs and elders.