The issue of raising the hands when going into Rukoo and standing up from it explained with clear proofs. Shaykh Ibn Farooq حفظه الله wrote a book on this issue that can be downloaded for free here:

https://iiu-pk.academia.edu/UthmanIbn...

Issue of Raf 'Al Yadayn 'ul yadayn raising of the hands Abu Yusuf Uthman ibn Farooq answered with proofs from the Sunnah with proofs from the authentic reliable books Islam Muslim Salaf salafi hanafi hanbali shafi maliki takbir Salat salah correct ikhtilaaf takbeeratul ihraam yadain takbeerat al-ihram hadith sahabah salaf as-salih tahqiq tahqeeq san diego masjid ribat student of knowledge dars