The Prophet ﷺ as saying: When a servant (of Allah) is placed in his grave, and his Companions depart from him, he hears the stepping sound of their shoes. (Using translation from Abū Dāʾūd 3231)  

«إِنَّ الْعَبْدَ إِذَا وُضِعَ فِي قَبْرِهِ وَتَوَلَّى عَنْهُ أَصْحَابُهُ إِنَّهُ لَيَسْمَعُ قَرْعَ نِعَالِهِمْ»