It is narrated from Sayyiduna Salamah bin Akwa’ (may Allah be pleased with him) that I was with the Prophet (peace and blessings of Allah be upon him) when a man sneezed, so the Prophet (peace and blessings of Allah be upon him) said «يرحمك الله», then he sneezed a second time, so the Prophet (peace and blessings of Allah be upon him) said: "He has a cold."
Hadith Referenceالادب المفرد / كتاب العطاس والتثاؤب / 938
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : صحيح مسلم ، الزهد و الرقائق ، ح : 2993»
It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him), he said: Respond to the one who sneezes once, twice, and three times; after that, if he sneezes, it is due to a cold.
Hadith Referenceالادب المفرد / كتاب العطاس والتثاؤب / 939