The Messenger of Allah (pbuh)went out to the place of prayer to pray for rain. When he wanted to make supplication, he faced the qiblah and turned around his cloak.  

أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ ﷺ خَرَجَ إِلَى الْمُصَلَّى يَسْتَسْقِي وَأَنَّهُ لَمَّا أَرَادَ أَنْ يَدْعُوَ اسْتَقْبَلَ الْقِبْلَةَ ثُمَّ حَوَّلَ رِدَاءَهُ  

Abd Allah b. Zaid al Mazini said: The Messenger of Allah (pbuh) went out to the place of prayer and made supplication or rain, and turned around his cloak when the faced the qiblah.  

سَمِعْتُ عَبْدَ اللَّهِ بْنَ زَيْدٍ الْمَازِنِيَّ يَقُولُ خَرَجَ رَسُولُ اللَّهِ ﷺ إِلَى الْمُصَلَّى فَاسْتَسْقَى وَحَوَّلَ رِدَاءَهُ حِينَ اسْتَقْبَلَ الْقِبْلَةَ