Abu Hurairah (may Allah be pleased with him) narrates: "Say the supplicatory response to your (Muslim) brother (in reply to his sneeze) three times; if the sneezing increases, then it is a cold." Its chain is Hasan. Narrated by Abu Dawood. And (the narrator) Sa‘id al-Maqburi said: I only know about him that he attributed the hadith to the Prophet (peace and blessings of Allah be upon him) as marfu‘.