Narrated Nafi`: Once in a cold night, Ibn `Umar pronounced the Adhan for the prayer at Dajnan (the name of a mountain) and then said, Pray at your homes , and informed us that Allah's Apostle used to tell the Mu'adh-dhin to pronounce Adhan and say, Pray at your homes at the end of the Adhan on a rainy or a very cold night during the journey.