His father said: "So and so sent me to ask him how the Messenger of Allah ﷺ prayed for rain (Istisqa')." He said: 'The Messenger of Allah ﷺ went out beseeching and humble, (dressed) in a state of humility. He did not give a Khutbah like this Khutbah of yours, and he prayed two rak'ahs.'"  

عَنْ صَلاَةِ رَسُولِ اللَّهِ ﷺ فِي الاِسْتِسْقَاءِ فَقَالَ خَرَجَ رَسُولُ اللَّهِ ﷺ مُتَضَرِّعًا مُتَوَاضِعًا مُتَبَذِّلاً فَلَمْ يَخْطُبْ نَحْوَ خُطْبَتِكُمْ هَذِهِ فَصَلَّى رَكْعَتَيْنِ  

The Messenger of Allah ﷺ prayed for rain wearing a black khamisah.  

أَنَّ رَسُولَ اللَّهِ ﷺ اسْتَسْقَى وَعَلَيْهِ خَمِيصَةٌ سَوْدَاءُ