ENOfficial
Abu Huraira reported God’s Messenger as saying, “If anyone invokes a blessing on me at my grave I shall hear him, and if anyone invokes a blessing on me at a distance I shall have it conveyed to me.” Baihaqi transmitted it in Shu‘ab al-lman.
Source: sunnah.com
Other translations
Arabic
وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ صَلَّى عَلَيَّ عِنْدَ قَبْرِي سَمِعْتُهُ وَمَنْ صَلَّى عَلَيَّ نَائِيًا أُبْلِغْتُهُ» . رَوَاهُ الْبَيْهَقِيُّ فِي شعب الْإِيمَان
sunnah.com