Imam Baqir (a.s) said: “Pray three times for whoever sneezes, then leave him.”
عن الباقر (عليه السلام) قال
إذا عطس الرجل ثلاثا فشمته، ثم اتركه بعد ذلك.
Similar narrations
Al-Kāfi #2248“If one sneezes three times, the special expressions for this purpose should be said only up to three times and thereafter should be left...
Al-Khiṣāl #366They say ‘Yarhamakumullah to one who sneezes three times. Any more sneezing is due to the air.”