Abu Hurairah (May Allah be pleased with him) reported:
Whenever the Messenger of Allah (ﷺ) sneezed, he would cover his mouth with his hand or a piece of cloth, suppressing the sound this way.[Abu Dawud and At-Tirmidhi]. (FR)
App reference (FR): Book 6, Hadith 38 (FR)
Arabic/English book reference (FR): Book 6, Hadith 882 (FR)