Sunan Ibn Majah, Hadith 937 ⓘ
It was narrated that Ibn ‘Umar said: “On rainy nights or on cold windy nights, the Messenger of Allah would summon his announcer to call out: ‘Perform your prayer at your camps.’”
حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنْ أَيُّوبَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ كَانَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ يُنَادِي مُنَادِيهِ فِي اللَّيْلَةِ الْمَطِيرَةِ أَوِ اللَّيْلَةِ الْبَارِدَةِ ذَاتِ الرِّيحِ " صَلُّوا فِي رِحَالِكُمْ " .
also referenced under: Book 5, Hadith 990 (In-Book) & Volume 2, Book 5, Hadith 937 (DarusSalam)