Abu Salih reported that the Prophet, may Allah bless him and grant
him peace, said, "When one of you sneezes, he should say, 'Praise be to
Allah.' When he says, 'Praise be to Allah, ' his brother or companion should
say to him, 'May Allah have mercy on you.' Then let the person who sneezed
say, 'May Allah guide you and put your affairs in order.'"