It is unanimously accepted, that to visit the Rauza-e-Anwar of the Prophet (sallal laahu alaihi wasallam) is a great blessing and honour. There are various Ahadith-e-Mubaaraka relating to this topic, but only a few are being presented.
The Prophet (sallal laahu alaihi wasallam) said, My intercession becomes waajib upon him who visits my Grave. [Baihaqi]
The Prophet (sallal laahu alaihi wasallam), My intercession has been guaranteed for him who visits my grave. [Bazaaz]
I shall be his intercessor on the day of Qiyaamah, for him, who comes to me with the sole intention of making my ziyaarat alone and nothing else has brought him here. [Daar]
Whomsoever made Hajj and visited me after my wisaal, is as if he visited me in my hayaat (physical life). [Daar]
Whomsoever made Hajj and did not visit me, then he has been unjust to me. [Kaamil Ibn Adi]
Whomsoever visited me after my passing away, it is as if he visited me in my hayaat, and whomsoever passes away in any one of the two places i.e., Harimain Sharifain, then he shall be risen on the day of Qiyaamah in the companionship of those who have attained salvation. [Daar]
He, who made Hajj, and then made my Ziyaarat in my Musjid, then two accepted (Maqbool) Hajj has been written for him. [Wafa-ul-Wafa]