The Prophet (may Allah's peace and blessings be upon him) informed that the good and delightful vision is from Allah, whereas the dream, which is seeing what one dislikes and what saddens him, is from the devil. So, whoever sees what he dislikes should spit on his left and seek refuge with Allah from its evil, and it will not harm him as Allah has made what is mentioned a means of protection against the harm resulting from such a vision.