Musnad Ahmad 1965

It was narrated that Ibn "Abbas said: The Messenger of Allah (ﷺ) sent "Abdullah bin Rawahah on an expedition, and that happened to be a Friday. He sent his companions on ahead and said: I will slay behind and pray Jumu’ah with the Prophet (ﷺ), then I will catch up with them. When the Messenger of Allah (ﷺ) had prayed, he saw him and said: "What kept you from going out early with your companions?" He said: I wanted to pray Jumu’ah with you, then catch up with them. The Messenger of Allah (ﷺ) said: "If you were to spend everything on earth (in charity) you would never be able to match the reward of their leaving in the morning.”