Tradition 1: Imam As-Sadiq (‘a) said: When you decide to leave Medina, perform Ghusl. After asking for your needs, come to the Prophet's grave and bid farewell to him. Perform the same rituals observed on entering.

Then say:

اللَّهُمَّ لَا تَجْعَلْهُ آخِرَ الْعَهْدِ مِنْ زِيَارَتِي قَبْرَ نَبِيِّكَ (ص) فَإِنْ تَوَفَّيْتَنِي قَبْلَ ذَلِكَ فَإِنِّي أَشْهَدُ فِي مَمَاتِي عَلَى مَا أَشْهَدُ عَلَيْهِ فِي حَيَاتِي أَنْ لَا إِلَهَ إِلَّا أَنْتَ وَ أَنَّ مُحَمَّداً عَبْدُكَ وَ رَسُولُكَ

Translation: O Allah! Do not make this my last Ziyarah of the grave of Your Prophet. And if You take my life before I come here again, I bear witness after my passing away to that which I bear witness during my lifetime, which is; “There is no God but Allah and Muhammad is Your servant and Your Messenger.”

Tradition 2: The narrator asked Imam As-Sadiq (‘a) how to bid farewell to the grave of Allah's Messenger (S). Imam ('a) replied: Recite the following:

صَلَّى اللَّهُ عَلَيْكَ السَّلَامُ عَلَيْكَ لَا جَعَلَهُ اللَّهُ آخِرَ تَسْلِيمِي عَلَيْكَ

Translation: Allah's blessing be on you. Peace be on you. May Allah not make this the last time I salute you.

Tradition 3: Imam Ar-Ridha’ ('a) was seen bidding farewell to Allah's Messenger when he wanted to go for Umrah from there. After Maghrib he approached the grave of Allah 's Messenger (S) from the direction of the head. He saluted Allah's Messenger (S) and clung to the grave. Then he came to his pulpit. Then he moved back to the grave and prayed so near it that his left shoulder touched the part near a pillar situated on the opposite side by the head of the Prophet. He prayed six or eight Rakats prayers wearing Arabic sandals and the length of his Ruku and Sajdah was as long as reciting Tasbihat thrice or more. After that he prostrated for such a long time that the earth on which he had prostrated was moistened by his sweat. And some of our companions said that he was seen resting his cheek on the floor of the Masjid.