Imam Ali ibn Musa Ar-Ridha (as) was asked about visiting the grave of Abu al-Hasan Musa (as). Imam (as) said: "Pray in the mosques around it, and it suffices in all locations to say: Peace be upon the allies of Allah (swt) and His chosen ones. Peace be upon the trustees of Allah (swt) and His beloved ones. Peace be upon the supporters of Allah (swt) and His successors. Peace be upon the places of recognition of Allah (swt). Peace be upon the dwellings of the remembrance of Allah (swt). Peace be upon those who manifest the commands and prohibitions of Allah (swt). Peace be upon the callers to Allah (swt). Peace be upon those who dwell in the pleasure of Allah (swt). Peace be upon those who are sincere in the obedience of Allah (swt). Peace be upon the guides towards Allah (swt). Peace be upon those whom whoever aligns with has aligned with Allah (swt), and whoever opposes has opposed Allah (swt). Peace be upon those who, by knowing them, one knows Allah (swt), and by being ignorant of them, one remains ignorant of Allah (swt). Peace be upon those who, by holding onto them, one holds onto Allah (swt), and by forsaking them, one forsakes Allah (swt), the Mighty and Majestic. I bear witness before Allah (swt) that I am at peace with those at peace with you and at war with those at war with you. I believe in your secret and your public affairs. I delegate all matters to you. May Allah (swt) curse the enemies of the family of Muhammad, from among the jinn and mankind. I disassociate myself before Allah (swt) from them. May Allah (swt) send blessings upon Muhammad and the family of Muhammad." [This suffices for all visitations. Recite many blessings upon Muhammad and his family, mentioning them one by one by their names. Disavow their enemies and make any supplication you wish for yourself and for the believing men and women.]