Sunan Abi Dawud 5038
سنن أبي داود#5038SahihNarrated AbuBurdah: The Jews used to try to sneezes in the presence of the Prophet (ﷺ) hoping that he would say to them: "Allah have mercy on you!" but he would say: May Allah guide you and grant you well-being
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautHasan Sahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 43:266