Sunan an-Nasai Book 12, Hadith 1159

أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ يَزِيدَ الْمُقْرِئُ، قَالَ حَدَّثَنَا سُفْيَانُ، قَالَ حَدَّثَنَا عَاصِمُ بْنُ كُلَيْبٍ، عَنْ أَبِيهِ، عَنْ وَائِلِ بْنِ حُجْرٍ، قَالَ أَتَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم فَرَأَيْتُهُ يَرْفَعُ يَدَيْهِ إِذَا افْتَتَحَ الصَّلاَةَ حَتَّى يُحَاذِيَ مَنْكِبَيْهِ وَإِذَا أَرَادَ أَنْ يَرْكَعَ وَإِذَا جَلَسَ فِي الرَّكْعَتَيْنِ أَضْجَعَ الْيُسْرَى وَنَصَبَ الْيُمْنَى وَوَضَعَ يَدَهُ الْيُمْنَى عَلَى فَخِذِهِ الْيُمْنَى وَنَصَبَ أُصْبُعَهُ لِلدُّعَاءِ وَوَضَعَ يَدَهُ الْيُسْرَى عَلَى فَخِذِهِ الْيُسْرَى ‏.‏ قَالَ ثُمَّ أَتَيْتُهُمْ مِنْ قَابِلٍ فَرَأَيْتُهُمْ يَرْفَعُونَ أَيْدِيَهُمْ فِي الْبَرَانِسِ ‏.‏

It was narrated that Wa'il bin Hujr said:"I came to the Messenger of Allah (ﷺ) and I saw him raising his hands when he started to pray until they were in level with his shoulders, and when he wanted to bow. When he sat following the first two rak'ahs, he sat on his left foot and held the right foot upright. He placed his right hand on his right thigh and raised his finger for the supplication, and he placed his left hand on his left thigh." He said: "Then I came the following year and I saw them raising their hands inside their Baranis