Whenever His Eminence, Mahdi (a.s) was indisposed he used to write the following supplication on a new utensil with the clay (Turbah) of the grave of Imam Husain (a.s) and wash it with water and drink it:
‘In the name of Allah’ is a medicine and ‘Praise be to Allah’ is a cure, and ‘There is no god but Allah’, is a protector, ‘He is the giver of cure’ is the remedy. And ‘He is the savior’ is sufficient Take away the hardship by the Lord of men; this is the remedy no ailment will be left and may Allah bless Muhammad and his Household, the Elite.