The Prophet ﷺ used to raise his hands when he began to pray, when he wanted to bow, when he raised his head from bowing, and when he stood up after the first two rak'ahs, he would raise his hands likewise, level with his shoulders.  

عَنِ النَّبِيِّ ﷺ أَنَّهُ كَانَ يَرْفَعُ يَدَيْهِ إِذَا دَخَلَ فِي الصَّلاَةِ وَإِذَا أَرَادَ أَنْ يَرْكَعَ وَإِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ وَإِذَا قَامَ مِنَ الرَّكْعَتَيْنِ يَرْفَعُ يَدَيْهِ كَذَلِكَ حَذْوَ الْمَنْكِبَيْنِ  

“Allah listens to him who praises Him,” (he raised his hands); and when he stood up at the end of two rak’ahs, he raised his hands. He (Ibn ‘Umar) traced that back to the Messenger of Allah ﷺ. Abu Dawud said: What is correct is that the tradition reported by Ibn ‘Umar does not go back to the Prophet (may peace beupon him). Abu Dawud said: The narrator Baqiyyah reported the first part of this tradition from ‘Ubaid Allah and traced it back to the Prophet ﷺ; and the narrator al-Thaqafi reported it from ‘Ubaid Allah as a statement of Ibn ‘Umar himself(not from the Porphet). In this version he said: When he stood at the end of two rak’ahs he raised them up to his breasts. And this is the correct version. Abu Dawud said: This tradition has been transmitted as a statement of Ibn ‘Umar (and not of the Prophet) by al-Laith b. Sa’d, Malik, Ayyub, and Ibn Juraij; and this has been narrated as a statement of the Prophet ﷺ by Hammad b. Salamah alone on the authority of Ayyub. Ayyub and Malik did not mention his raising of hands when he stood after two prostrations, but al-Laith mentioned it in his version. Ibn Juraij said in this version: I asked Nafi’: Did Ibn ‘Umar raise (his hands) higher for the first time? He said: No, I said: Point out to me. He then pointed to the breasts or lower than that.  

أَنَّهُ كَانَ إِذَا دَخَلَ فِي الصَّلاَةِ كَبَّرَ وَرَفَعَ يَدَيْهِ وَإِذَا رَكَعَ وَإِذَا قَالَ سَمِعَ اللَّهُ لِمَنْ حَمِدَهُ وَإِذَا قَامَ مِنَ الرَّكْعَتَيْنِ رَفَعَ يَدَيْهِ وَيَرْفَعُ ذَلِكَ إِلَى رَسُولِ اللَّهِ ﷺ  

The Prophet ﷺ used to raise his hands when he began to pray, when he wanted to bow, when he raised his head from bowing, and when he stood up after the first two rak'ahs, he would raise his hands likewise, level with his shoulders. (Using translation from Nasāʾī 1182)  

عَنِ النَّبِيِّ ﷺ «أَنَّهُ كَانَ يَرْفَعُ يَدَيْهِ إِذَا دَخَلَ فِي الصَّلَاةِ وَإِذَا أَرَادَ أَنْ يَرْكَعَ وَإِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ وَإِذَا قَامَ مِنَ الرَّكْعَتَيْنِ رَفَعَ يَدَيْهِ فِي ذَلِكَ كُلِّهِ حَذْوَ الْمَنْكِبَيْنِ  

The Prophet ﷺ used to raise his hands when he began to pray, when he wanted to bow, when he raised his head from bowing, and when he stood up after the first two rak'ahs, he would raise his hands likewise, level with his shoulders. (Using translation from Nasāʾī 1182)  

عَنِ النَّبِيِّ ﷺ أَنَّهُ كَانَ يَرْفَعُ يَدَيْهِ إِذَا دَخَلَ فِي الصَّلَاةِ وَإِذَا أَرَادَ أَنْ يَرْكَعَ وَإِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ وَإِذَا قَامَ مِنَ الرَّكْعَتَيْنِ يَرْفَعُ يَدَيْهِ كَذَلِكَ حِذَاءَ الْمَنْكِبَيْنِ