´Narrated 'Umar bin Ishaq bin Abi Talhah:` from his mother, from her father, who said: "The Messenger of Allah (ﷺ) said: 'Reply three times to the sneezing person. If he (sneezes) more, then if you wish reply and if you do not then do not.'"
Related hadith on this topic
Explanation & Benefits
Shaykh Dr. Abdur Rahman Freywai
Commentary:
Note:
(In the chain of narration, "Yazid bin Abdur Rahman Abu Khalid al-Dalani" used to make many mistakes, and "Umar bin Ishaq bin Abi Talhah" and his mother "Humaidah or Ubaidah"—both are unknown [majhool].)
Source: Sunan al-Tirmidhi – Majlis ‘Ilmi Dar al-Da‘wah, New Delhi Edition, Page: 2744