Majma al-Zawaid — Hadith 2196

Amr bin Aws states: The Companion who heard the caller of the Prophet (peace and blessings be upon him) told me that when he called the iqamah for the prayer, or when the time of prayer came (the narrator is in doubt, or the words were something like this), he said: "Pray at your lodgings." He said this because of rain.
Imam Ahmad recorded this narration, and its narrators are the narrators of the Sahih.