What did Prophet Muhammad (saw) direct mosque-goers to do on cold and rainy nights?
 Narrated Nafi`:                     Once on a very cold and stormy night, Ibn `Umar pronounced the Adhan for the prayer and then said, "Pray in your homes." He (Ibn `Umar) added. "On very cold and rainy nights Allah's Apostle used to order the Mu'adh-dhin to say, 'Pray in your homes.' "