[Machine] Abu Al-Abbas narrated from Ar-Rabi' that Ash-Shafi'i narrated from someone who he does not accuse of lying, that the Prophet ﷺ used to say when it rained: "Come out with us to this which Allah has made pure, so we can purify ourselves from it and praise Allah for it." This hadith is interrupted and it was narrated from Umar regarding it.  

ثنا أَبُو الْعَبَّاسِ أنبأ الرَّبِيعُ أنبأ الشَّافِعِيُّ أنبأ مَنْ لَا أَتَّهِمُ عَنْ يَزِيدَ بْنِ الْهَادِ أَنَّ النَّبِيَّ ﷺ كَانَ إِذَا سَالَ السَّيْلُ قَالَ اخْرُجُوا بِنَا إِلَى هَذَا الَّذِي جَعَلَهُ اللهُ طَهُورًا فَنَتَطَهَّرَ مِنْهُ وَنَحْمَدَ اللهَ عَلَيْهِ هَذَا مُنْقَطِعٌ وَرُوِيَ فِيهِ عَنْ عُمَرَ  

[Machine] Umar ibn Al-Khattab passed by us returning from the Hajj pilgrimage, accompanied by a group of the companions of the Messenger of Allah ﷺ. He said, "Cleanse yourselves in the sea, for it is blessed." Then he called for the towels, and they descended and cleansed themselves.  

مَرَّ بِنَا عُمَرُ بْنُ الْخَطَّابِ ؓ آتِيًا مِنَ الْحَجِّ وَمَعَهُ نَفَرٌ مِنْ أَصْحَابِ رَسُولِ اللهِ ﷺ فَقَالَ اغْتَسِلُوا مِنَ الْبَحْرِ فَإِنَّهُ مُبَارَكٌ ثُمَّ دَعَا بِمَنَادِيلَ فَنَزَلُوا وَاغْتَسَلُوا