It is narrated from Hazrat Nu'man (may Allah be pleased with him) that once the Holy Prophet (peace and blessings be upon him) turned his blessed face towards the people and said three times, "Straighten your rows. By Allah! Either you straighten your rows or Allah will create discord among your hearts." Hazrat Nu'man (may Allah be pleased with him) says that after that I used to see that a man would stand with his ankle joined to the ankle of his companion, his knee to the knee of his companion, and his shoulder to the shoulder of his companion.