Sayyiduna Nu'aym bin al-Nahham (may Allah be pleased with him), who was from Banu Adi bin Ka'b, said: The adhan for the morning prayer was called on a cold day while he was under his wife's wrap. He said: "If only the caller would also say: 'And whoever stays sitting at home, there is no blame.'" The mu'adhdhin of the Messenger of Allah (peace and blessings be upon him) called out at the end of the adhan: "Whoever stays sitting (at home), there is no blame." And this was in the time of the Prophet (peace and blessings be upon him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1868