Abu Hurairah reported the prophet ﷺ as saying: When one of you sneezes, he should say: praise be to Allah in every circumstance, and his brother or his companion should say: Allah in every on you! And he should then reply: May Allah guide you well-being.

Narrated Abu Hurairah: Respond three times to your brother when he sneezes, and if he sneezes more often, he has a cold in his head.

The tradition mentioned above has also been transmitted by Abu Hurairah through a different chain from the prophet ﷺ. A transmitter Saeed bin Saeed said: I know him that he traced this tradition back to the prophet ﷺ. Abu Dawud said: Abu Nuaim transmitted it from Musa bin Qais, from Muhammad bin Ajlan, from Saeed, on the authority of Abu Hurairah, from the prophet ﷺ.

Narrated Ubayd ibn Rifaah az-Zuraqi: The Prophet ﷺ said: Invoke a blessing on one who sneezes three times; (and if he sneezes more often), then if you wish to invoke a blessing on him, you may invoke, and if you wish (to stop), then stop.

Salamah bin al-Akwa said: when a man sneezed beside the prophet ﷺ, he said to him: Allah have mercy on you, but when he sneezed again, he said: The man has a cold in the head.

Narrated Abu Burdah: 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!

Anas said: Two men sneezed in the presence of the prophet ﷺ. He said: Allah have mercy on you! To one and not to the other. He was asked: Messenger of Allah! Two persons sneezed. Ahmad’s version has: You invoked a blessing on one of them and left the other. He replied: This man praised Allah, and this man did not praise Allah.