Mishkat al-Masabih #1364

Ja'far b. Muhammad told in mursal form that the Prophet, Abu Bakr and ‘Umar said “God is most great” at the two festivals and when praying for rain seven times in the first rak'a and five times in the second. They prayed before the sermon, and recited the Qur’an in a loud voice. Shafi‘i transmitted it.