The Book of Prayer
Bulugh al-Maram #332
كتاب الصلاة
وَفِي حَدِيثِ أَبِي حُمَيْدٍ, عِنْدَ أَبِي دَاوُدَ: «يَرْفَعُ يَدَيْهِ حَتَّى يُحَاذِيَ بِهِمَا مَنْكِبَيْهِ, ثُمَّ يُكَبِّرَ»
Abu Dawud reported a Hadith narrated by Abu Humaid (RA) to the effect that he used to raise his hands and bring them parallel to his shoulders, and then utter the Takbir.
وَفِي حَدِيثِ أَبِي حُمَيْدٍ , عِنْدَ أَبِي دَاوُدَ : "يَرْفَعُ يَدَيْهِ حَتَّى يُحَاذِيَ بِهِمَا مَنْكِبَيْهِ, ثُمَّ يُكَبِّرَ"
Abu Dawud reported a Hadith narrated by Abu Humaid (RA) to the effect that he used to raise his hands and bring them parallel to his shoulders, and then utter the Takbir.
— Bulugh al-Maram, Hadith 332