Musannaf Ibn Abi Shaybah 8623 — What has come on the excellence

Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: The prayer in congregation is twenty-five times greater than the prayer offered alone. If the people are more, the reward is according to the number of people present in the mosque. A man asked: If there are ten thousand people, how much reward is there then? He said: If there are forty thousand, the reward of forty thousand will be given.