Shaykh allama Fawzaan said in his book “Sharhul aqidatool Imam al-Mujadid Mohammad ibn Abdulwahab” (p 68, Maktabatus Sunnah):
So, those who are enraged by the companions and hate them are the disbelievers and hypocrites. And the people of knowledge have used this ayyah to prove that the one who hates the companions is a disbeliever, because Allah said:
48:29 (Muhammad is the Messenger of Allah ; and those with him are forceful against the disbelievers, merciful among themselves. You see them bowing and prostrating [in prayer], seeking bounty from Allah and [His] pleasure. Their mark is on their faces from the trace of prostration. That is their description in the Torah. And their description in the Gospel is as a plant which produces its offshoots and strengthens them so they grow firm and stand upon their stalks, delighting the sowers) – so that Allah may enrage by them the disbelievers. (Allah has promised those who believe and do righteous deeds among them forgiveness and a great reward).