Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:2319 – Abū Bakr b. Fūrak > ʿAbdullāh b. Jaʿfar > Yūnus b. Ḥabīb > Abū Dāwud > Ibn Abū Dhiʾb > Muḥammad b. ʿAmr b. ʿAṭāʾ > Muḥammad b. ʿAbd al-Raḥman b. Thawbān > Abū Hurayrah

[Machine] I saw the Messenger of Allah ﷺ raise his hands while praying, and it has been reported in this narration that this was before the takbeer.  

البيهقي:٢٣١٩ – وَأَخْبَرَنَا أَبُو بَكْرِ بْنُ فُورَكٍ أنبأ عَبْدُ اللهِ بْنُ جَعْفَرٍ ثنا يُونُسُ بْنُ حَبِيبٍ ثنا أَبُو دَاوُدَ ثنا ابْنُ أَبِي ذِئْبٍ عَنْ مُحَمَّدِ بْنِ عَمْرِو بْنِ عَطَاءٍ عَنْ مُحَمَّدِ بْنُ عَبْدِ الرَّحْمَنِ بْنِ ثَوْبَانَ عَنْ أَبِي هُرَيْرَةَ ؓ قَالَ

رَأَيْتُ رَسُولَ اللهِ ﷺ يَرْفَعُ يَدَيْهِ مَدًّا يَعْنِي فِي الصَّلَاةِ وَقَدْ قِيلَ فِي هَذِهِ الرِّوَايَةِ أَنَّ ذَلِكَ كَانَ قَبْلَ التَّكْبِيرِ