The sun was eclipsed, so the Messenger of Allah ﷺ ordered a man to call out, "The prayer is to be performed in congregation."
حدثنا عمرو بن عثمان حدثنا الوليد حدثنا عبد الرحمن بن نمر أنه سأل الزهري فقال الزهري أخبرني عروة
كسفت الشمس فأمر رسول الله ﷺ رجلا فنادى أن الصلاة جامعة
Bukhari narrated it in the chapter on the eclipse prayer, section on reciting aloud during the eclipse prayer, no. 1066, and Muslim narrated it in the chapter on the eclipse prayer, section on the eclipse prayer, no. 901, from the hadith of Zuhri through this same chain. Muslim also narrated it from the hadith of Walid bin Muslim through this same chain.