Hilal bin Yasaf narrates: I participated in a battle with Salim bin Ubaid. Among those present, a man sneezed and said: "As-salamu alaikum." So Salim said: "Peace be upon you and upon your mother as well." This man disliked it very much. Salim said to him: "Perhaps you disliked this." He replied: "I do not like that my mother be mentioned, whether with good or with bad." So Salim said: "We were on a journey with the Prophet (peace be upon him). A man sneezed and said: 'As-salamu alaikum.' So the Prophet (peace be upon him) said: 'Peace be upon you and upon your mother as well?' When a person sneezes, he should say: 'Alhamdulillah ala kulli hal' or 'Alhamdulillah Rabbil Alameen,' and the other person should reply with: 'Yarhamukallah,' and he should say in response: 'Yaghfirullahu lakum' (May Allah forgive you)."