(17) باب رَفْعِ الْيَدَيْنِ عِنْدَ الرَّفْعِ مِنَ الرُّكُوعِ
'Alqamah bin Wa'il said:
"My father told me: 'I prayed behind the Messenger of Allah (ﷺ) and I saw him raise his hands when he started to pray, and when he bowed, and when he said: Sami' Allahu liman hamidah (Allah hears the one who praises Him)" like this.'" And (one of the narrators) Qais pointed towards his ears.
Reference: Sunan an-Nasa'i 1055
In-book reference: Book 12, Hadith 27
English translation: Vol. 2, Book 12, Hadith 1056