Imam Malik Ibn Anas (rahimahullah) said:

“Anyone’s speech can either be accepted or rejected except the speech of the individual in that grave!”Then he pointed to the grave of the Prophet.

Sheikh ul Islam Ibn Taymiyah commented on this statement when he said:

“Rather every individual amongst the people, his statement can either be accepted or rejected, other than the Messenger any individual except the Messenger of Allah. Therefore, whoever raises of Allah, to the point that whoever loves him and agrees with him is from Ahlus Sunnah wal Jama‟ah, and whoever opposes him is from the people of innovation (i.e. Ahlul Bid‟ah) and deviant sects, as you find with many of those who claim to follow the four Imams (e.g. Abu Haneefah, Malik, Sha‟fiee‟ and Ahmad) in their speech about the religion and other than this, then he himself is from the people of innovation, deviation and desires”