The Messenger of Allah ﷺ took the people out (to the place of prayer) and prayed for rain. He led them in two rak'ahs of prayer in the course of which he recited from the Qur'an in a loud voice. He turned around his cloak and raised his hands, prayed for rain and faced the qiblah  

أَنَّ رَسُولَ اللَّهِ ﷺ خَرَجَ بِالنَّاسِ لِيَسْتَسْقِيَ فَصَلَّى بِهِمْ رَكْعَتَيْنِ جَهَرَ بِالْقِرَاءَةِ فِيهِمَا وَحَوَّلَ رِدَاءَهُ وَرَفَعَ يَدَيْهِ فَدَعَا وَاسْتَسْقَى وَاسْتَقْبَلَ الْقِبْلَةَ  

One day the Messenger of Allah ﷺ went out to make supplication for rain. He turned his back towards the people praying to Allah, the Exalted. The narrator Sulaiman b. Dawud said: He faced the qiblah and turned around his cloak and then offered two rak'ahs of prayer. The narrator Ibn Abi Dhi'b said: He recited from the Qur'an in both of them. The version of Ibn al-Sarh adds: By it he means in a loud voice.  

أَنَّهُ سَمِعَ عَمَّهُ وَكَانَ مِنْ أَصْحَابِ رَسُولِ اللَّهِ ﷺ يَقُولُ خَرَجَ رَسُولُ اللَّهِ ﷺ يَوْمًا يَسْتَسْقِي فَحَوَّلَ إِلَى النَّاسِ ظَهْرَهُ يَدْعُو اللَّهَ ﷻ قَالَ سُلَيْمَانُ بْنُ دَاوُدَ وَاسْتَقْبَلَ الْقِبْلَةَ وَحَوَّلَ رِدَاءَهُ ثُمَّ صَلَّى رَكْعَتَيْنِ قَالَ ابْنُ أَبِي ذِئْبٍ وَقَرَأَ فِيهِمَا زَادَ ابْنُ السَّرْحِ يُرِيدُ الْجَهْرَ  

"He turned around his cloak, putting its right side on his left shoulder and its left side on his right shoulder. Thereafter he made supplication to Allah."  

وَحَوَّلَ رِدَاءَهُ فَجَعَلَ عِطَافَهُ الأَيْمَنَ عَلَى عَاتِقِهِ الأَيْسَرِ وَجَعَلَ عِطَافَهُ الأَيْسَرَ عَلَى عَاتِقِهِ الأَيْمَنِ ثُمَّ دَعَا اللَّهَ ﷻ  

The Messenger of Allah (pbuh)prayed for rain wearing a black robe with ornamented border. The Messenger of Allah (pbuh)wanted to reverse it from bottom to top by holding the bottom. But when it was too heavy he turned it round on his shoulders.  

اسْتَسْقَى رَسُولُ اللَّهِ ﷺ وَعَلَيْهِ خَمِيصَةٌ لَهُ سَوْدَاءُ فَأَرَادَ رَسُولُ اللَّهِ ﷺ أَنْ يَأْخُذَ بِأَسْفَلِهَا فَيَجْعَلَهُ أَعْلاَهَا فَلَمَّا ثَقُلَتْ قَلَبَهَا عَلَى عَاتِقِهِ  

Ishaq ibn Abdullah ibn Kinanah reported: Al-Walid ibn Utbah or (according to the version of Uthman) al-Walid ibn Uqbah, the then governor of Medina, sent me to Ibn Abbas to ask him about the prayer for rain offered by the Messenger of Allah ﷺ. He said: The Messenger of Allah ﷺ went out wearing old clothes in a humble and lowly manner until he reached the place of prayer. He then ascended the pulpit, but he did not deliver the sermon as you deliver (usually). He remained engaged in making supplication, showing humbleness (to Allah) and uttering the takbir (Allah is most great). He then offered two rak'ahs of prayer as done on the 'Id (festival). Abu Dawud said: This is the version of al-Nufail. What is correct is Ibn Utbah's  

عَنْ صَلاَةِ رَسُولِ اللَّهِ ﷺ فِي الاِسْتِسْقَاءِ فَقَالَ خَرَجَ رَسُولُ اللَّهِ ﷺ مُتَبَذِّلاً مُتَوَاضِعًا مُتَضَرِّعًا حَتَّى أَتَى الْمُصَلَّى زَادَ عُثْمَانُ فَرَقِيَ عَلَى الْمِنْبَرِ ثُمَّ اتَّفَقَا وَلَمْ يَخْطُبْ خُطَبَكُمْ هَذِهِ وَلَكِنْ لَمْ يَزَلْ فِي الدُّعَاءِ وَالتَّضَرُّعِ وَالتَّكْبِيرِ ثُمَّ صَلَّى رَكْعَتَيْنِ كَمَا يُصَلِّي فِي الْعِيدِ