Narrated Iyas bin Salamah:
from his father: "A man sneezed in the presence of the Messenger of Allah (ﷺ) while I was present, so the Messenger of Allah (ﷺ) said: 'Yarhamukallah (May Allah have mercy upon you).' Then he sneezed a second and third time. So the Messenger of Allah (ﷺ) said: "This man is suffering from a cold.'" (DE)
English reference (DE): Vol. 5, Book 41, Hadith 2743 (DE)
Arabic reference (DE): Book 43, Hadith 2964 (DE)