Authentic Supplication Number 237.

Abi Musa related that the Jews used to sneeze at the place at the Prophet ┬áhoping that he would say yarhamukum ‘allahu; however,he would say: Yahdeekum’allahu wa yuslihi balakum (245).

(245) May Allah guide you, and better your affairs.

‘Al-`Adawee said it was comely, and that it was reported by At-Tirmithi, page 11 of volume 8 of Tuhfah; Al-Bukhari, #940 in ‘Al-‘Adab ‘al-Mufrad; ‘Abu Dawood, #5038; ‘Ibn As-Sunni, #262; and ‘Al-Hakim, 268/4.