عَنْ عَمْرِو بْنِ أَوْسِ أَنَّ رَجُلًا مِنْ ثَقِيفٍ أَخْبَرَهُ أَنَّهُ سَمِعَ مُؤَذِّنَ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ فِي يَوْمٍ مَطِيرٍ يَقُولُ: حَيَّ عَلَى الصَّلَاةِ حَيَّ عَلَى الْفَلَاحِ صَلُّوا فِي رِحَالِكُمْ
A man from Banu Thaqif informed Sayyiduna Umar bin Aws (may Allah be pleased with him) that on a rainy day, he heard the Mu’adhdhin of the Messenger of Allah (peace and blessings be upon him) say, after “Hayya ‘ala as-Salah, Hayya ‘ala al-Falah”: “Sallu fi rihalikum” (Pray in your homes).