قَالَ ﷺ: «لا تَجْعَلُوا قَبْرِيْ عِيْداً وَ صَلُّوا عَلَيَّ فَإِنَّ صَلاتَكُمْ تَبْلُغُنِي حَيْثُ كُنْتُمْ»

The Prophet \pbuh said: “Do not take my grave as a place of habitual ceremony. Send prayers upon me, for verily your prayers reach me wherever you are.”

Reference: The Prophet \pbuh said: “Do not take my grave as a place of habitual ceremony. Send prayers upon me, for verily your prayers reach me wherever you are.” Abū Dāwud (#2042, 2/218) and Aḥmad (2/367). Al-Albānī authenticated it in _Ṣaḥīḥ Abī Dāwud_ (2/383).