Yahya related to me from Malik from Ibn Shihab from Salim ibn Abdullah from Abdullah ibn Umar that the Messengerof Allah ﷺ used to raise his hands to the level of his shoulders when he began the prayer and when he raised his head from the ruku he raised them in the same way, saying, "Allah hears whoever praises him, our Lord and praise belongs to You." He did not raise them in the sujud.  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ إِذَا افْتَتَحَ الصَّلاَةَ رَفَعَ يَدَيْهِ حَذْوَ مَنْكِبَيْهِ وَإِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ رَفَعَهُمَا كَذَلِكَ أَيْضًا وَقَالَ سَمِعَ اللَّهُ لِمَنْ حَمِدَهُ رَبَّنَا وَلَكَ الْحَمْدُ وَكَانَ لاَ يَفْعَلُ ذَلِكَ فِي السُّجُودِ  

[Machine] I saw the Messenger of Allah ﷺ when he stood in prayer, he raised his hands until they were parallel to his shoulders. Then he would say the takbir (Allahu Akbar). He used to do that when he would start the rukoo' (bowing) and when he raised his head from rukoo'. He would say, "Allah listens to the one who praises Him." However, he did not do that while in prostration. Ibn Al-Mubarak also used to raise his hands in this manner in the five daily prayers, the voluntary prayers, the two Eid prayers, and funeral prayers. And Abu Abdullah mentioned this elsewhere. Bakr ibn Muhammad ibn Hamdan and Ibrahim ibn Hilal and Ali ibn Al-Hasan ibn Shaqiq narrated the same from Ibn Al-Mubarak through Yunus, and he mentioned it in the same way. However, he did not mention Ibn Al-Mubarak's action.  

رَأَيْتُ رَسُولَ اللهِ ﷺ إِذَا قَامَ فِي الصَّلَاةِ رَفَعَ يَدَيْهِ حَتَّى تَكُونَا حَذْوَ مَنْكِبَيْهِ ثُمَّ يُكَبِّرُ قَالَ وَكَانَ يَفْعَلُ ذَلِكَ حِينَ يُكَبِّرُ لِلرُّكُوعِ وَيَفْعَلُ ذَلِكَ حِينَ يَرْفَعُ رَأْسَهُ مِنَ الرُّكُوعِ وَيَقُولُ سَمِعَ اللهُ لِمَنْ حَمِدَهُ وَلَا يَفْعَلُ ذَلِكَ فِي السُّجُودِ قَالَ وَكَانَ ابْنُ الْمُبَارَكِ يَرْفَعُ يَدَيْهِ كَذَلِكَ فِي الصَّلَوَاتِ الْخَمْسِ وَالتَّطَوُّعِ وَالْعِيدَيْنِ وَالْجَنَائِزِ 2505 وَأَخْبَرَنَا بِهِ أَبُو عَبْدِ اللهِ فِي مَوْضِعٍ آخَرَ ثنا بَكْرُ بْنُ مُحَمَّدِ بْنِ حَمْدَانَ الصَّيْرَفِيُّ ثنا إِبْرَاهِيمُ بْنُ هِلَالٍ ثنا عَلِيُّ بْنُ الْحَسَنِ بْنِ شَقِيقٍ ثنا ابْنُ الْمُبَارَكِ عَنْ يُونُسَ فَذَكَرَهُ بِنَحْوِهِ وَلَمْ يَذْكُرْ فِعْلَ ابْنِ الْمُبَارَكِ