Abu al-Malih al-Hudhali narrates from his father, Sayyiduna Usamah (may Allah be pleased with him); he said: I went out on a military expedition with the Messenger of Allah (peace and blessings be upon him). We set out for Hunayn when seventeen days of Ramadan had passed, and a Friday came upon us that was a rainy day. The Prophet (peace and blessings be upon him) ordered Sayyiduna Bilal (may Allah be pleased with him), and he called out among the people: "The prayer is (to be offered) in your lodgings."
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 495