Ibn ‘Abbas told that the Prophet sent ‘Abdallah b. Rawaha with a detachment and that happened to be on a Friday. His companions set off in the morning, but he decided to stay behind and catch up on them after saying the prayer along with God’s Messenger. When he did so he saw him and asked him what had prevented him from going out in the morning with his companions. He replied, “I wanted to pray along with you and then catch up with them,” whereupon he said, “If you were to contribute all the earth contains you would not attain to the excellence of their going out in the morning.” Tirmidhi transmitted it.