Praise be to Allah.

In the answer to question no. 97384 we have explained that many scholars regard the Prophet (peace and blessings of Allaah be upon him) as the best of creation, and in their discussion they also said that he is better than the Ka’bah.  

This preference applies only to the Prophet (peace and blessings of Allaah be upon him) himself, not to the grave in which he is buried. 

Shaykh al-Islam (may Allaah have mercy on him) was asked about two men who were disputing. One of them said that the soil of the grave of Muhammad (peace and blessings of Allaah be upon him) is better than the heavens and the earth. The other said: The Ka’bah is better. Who is right? 

He replied: Praise be to Allaah. As for Muhammad (peace and blessings of Allaah be upon him) himself, Allaah has not created anything nobler than him. As for the soil (of the grave), it is not better than the Ka’bah, the sacred House, rather the Ka’bah is better than it, and none of the scholars suggested that the soil of the grave is better than the Ka’bah apart from al-Qaadi ‘Iyaad. No one said that before him and no one else agreed with him afterwards. And Allaah knows best.  

Al-Fataawa al-Kubra (4/411) and Majmoo’ al-Fataawa (27/38). 

And Allaah knows best.