Sahih Muslim Book - 9, Hadith - 2073

وَحَدَّثَنِى أَبُو الطَّاهِرِ وَحَرْمَلَةُ قَالاَ أَخْبَرَنَا ابْنُ وَهْبٍ أَخْبَرَنِى يُونُسُ عَنِ ابْنِ شِهَابٍ قَالَ أَخْبَرَنِى عَبَّادُ بْنُ تَمِيمٍ الْمَازِنِىُّ أَنَّهُ سَمِعَ عَمَّهُ وَكَانَ مِنْ أَصْحَابِ رَسُولِ اللَّهِ -صلى الله عليه وسلم- يَقُولُ خَرَجَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- يَوْمًا يَسْتَسْقِى فَجَعَلَ إِلَى النَّاسِ ظَهْرَهُ يَدْعُو اللَّهَ وَاسْتَقْبَلَ الْقِبْلَةَ وَحَوَّلَ رِدَاءَهُ ثُمَّ صَلَّى رَكْعَتَيْنِ.

'Abbad bin Tamim Al-Mazini said that he heard his paternal uncle, who was one of the Companions of the Messenger of Allah (s.a.w), say: "The Messenger of Allah (s.a.w) went out one day to pray for rain. He turned his back to the people, supplicating to Allah, and he turned to face the Qiblah and turned his Rida' around, then he prayed two Rak'ah."