All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
Raising the hands when bowing and when raising up from the bowing position is confirmed from the Prophet as clarified in Fatwa raising his hands during the prayer ">89001.
Indeed, Ibn Al-Qayyim said: "About thirty people narrated that the Prophet used to raise his hands in these three positions (when starting the prayer, when bowing and when raising up from the bowing position), and the 10 companions who were given glad tidings to enter Paradise agreed on this narration, and it was never confirmed otherwise, rather this was how he, performed the prayer until he died."
It is not possible in this Fatwa to quote all the narrations which were reported about the companions in this regard, however, we are going to mention some of them.
For instance, 'Abdullaah Ibn Az-Zubayr narrated: "I prayed behind Abu Bakr and he raised his hands when starting the prayer, when bowing and when raising up from the bowing position." Abu Bakr also narrated: "I prayed behind the Prophet and he raised his hands when starting the prayer, when bowing and when raising up from the bowing position." [At-Tabaraani and Al-Bayhaqi]
Moreover, the same thing was narrated about 'Ali . [Abu Daawood, At-Tirmithi, Ahmad, and Ibn Khuzaymah]
Also, the same thing was narrated about Ibn 'Umar . [Al-Bukhari, Muslim, and Ahmad]
Maalik Ibn Huwayrith also narrated the same thing about the Prophet . [Al-Bukhari, Muslim, An-Nasaa'i, Abu Daawood and Ahmad]
Besides, Waa'il Ibn Hujr narrated the same thing. [Muslim, An-Nasaa'i, and Al-Bayhaqi]
As regards the narration by Al-Baraa' it was reported from him by Al-Bayhaqi .
Moreover, the narration by Abu Humayd As-Saa’idi was reported from him in the presence of ten companions among whom was Abu Qutaadah, that the Prophet used to raise his hands when bowing and when raising up from the bowing position. [At-Tirmithi and Ibn Maajah]
The raising of the hands is also confirmed about him by Anas [Ibn Maajah] and by Abu Hurayrah . [Ahmad and others]
We believe that this is enough evidence for a just person who is not biased and who wants to follow the guidance of the Prophet .
As regards praying behind a person who worships the grave, please refer to Fatwa 82989, and to Fatwa 84006 about permissible and impermissible ways of seeking Tawassul (intercession).