Narrated Abu Hurairah:
that when the Prophet (ﷺ) would sneeze, he would cover his face with his hand or with his garment, and muffle the sound with it. (RU)
English reference (RU): Vol. 5, Book 41, Hadith 2745 (RU)
Arabic reference (RU): Book 43, Hadith 2969 (RU)