Regarding raising the hands in the graveyard when making dua, a shaikhul hadith says that it is not bid'ah.

Answer

It is in conflict with the Sunnah to raise the hands when making dua by a grave. Regardless of aqeedah, it is incumbent to follow the Sunnah. If after Janaazah Salaat one raises one's hands to make dua, it will be wrong, bid'ah and sinful regardless of what aqeedah accompanies the dua. The shaikhul hadith sahib did not apply his mind. He has not taken into consideration that the Akaabir Ulama have explicitly said that lifting the hands in front of a grave conveys to an observer the impression of one worshipping the grave. Grave-worship is a widely prevailing disease of shirk. The shaikhul hadith has also forgotten that all his senior Asaatizah in India and Pakistan never lifted their hands in the Qabrustaan. He must have observed them. However, when the molvis return to South Africa, then their Ilmi weakness and lack of roohaaniyat induce them to make corrupt comprises with baatil. They blend the haqq with baatil without understanding that the consequence of this admixture is baatil.

Imaam Nawawi (rahmatullah alayh) also states that it is Sunnah to make Rafa' Yadain in Salaat'. He also says that it is fardh to recite Surah Faatihah after the Imaam in Salaat. He also says that it is Sunnat and necessary to recite Qunoot in Fajr Salaat, and he also states many things which are in conflict with the Hanafi Math-hab. He was a Shaafi'. Both Hanafis and Shaafis derive their evidence from the Qur'aan and Ahaadith. Just as a Hanafi may not cite Hadith to prove the validity of Rafa' Yadain in Salaat, and the many other masaa-il of other Math-habs, so too may he not produce any Hadith to negate a practice which the Ahnaaf have formulated in terms of their Qur'aanic and Ahaadith Dalaa -il and Usool. And, so too may a Hanafi not cite Imaam Nawawi's arguments derived from the Hadith to prove fardhiyat of Surah Faatihah for every raka't of Namaaz.

Nowhere in Abu Dawud is it mentioned that Rasululllah (sallallahu alayhi wasallam) instructed the Sahaabah to lift their hands by the qabr. There is a vast difference between dua and lifting the hands.