Abu al-Malih narrates from his father (may Allah be pleased with him) that he said: We were at al-Hudaybiyah when it rained, and the soles of our sandals had not even become wet when the caller to prayer of the Prophet (peace and blessings be upon him) announced: 'Sallu fi rihalikum' "Pray in your dwellings."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5023