أَخْبَرَنِي شُعَيْبُ بْنُ يُوسُفَ، عَنْ يَحْيَى بْنِ سَعِيدٍ الْقَطَّانِ، عَنْ سَعِيدٍ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم لاَ يَرْفَعُ يَدَيْهِ فِي شَىْءٍ مِنَ الدُّعَاءِ إِلاَّ فِي الاِسْتِسْقَاءِ فَإِنَّهُ كَانَ يَرْفَعُ يَدَيْهِ حَتَّى يُرَى بَيَاضُ إِبْطَيْهِ .
It was narrated that Anas said: "The Messenger of Allah (PBUH) did not raise his hands during any supplication except when praying for rain, when he used to raise his hands so high that the whiteness of his armpits could be seen." Translation Not Available
Book Ref: Sunan An Nisai Book 17 Hadith 1513
Web Ref: Sunan An Nisai Vol 2 Book 17 Hadith 1514