What does one do if he sees a dream he dislikes?

The questioner : This questioner says that she dreamed that a snake was chasing her and biting her, knowing that the same dream recurred, then stopped, and then returned to her in Makkah. What should she do?

The Shaykh : I am not one of those who interpret dreams, nor do I know how to interpret them, but I advise my brothers, the listeners, to follow what our Prophet (peace and blessings be upon him) guided us to.
He said: If any of you sees something he dislikes in his sleep, let him spit on his left side three times and say: I seek refuge in Allah from the evil of Shaytan and from the evil of what I saw. I seek refuge in Allah from the evil of Shaytan and from the evil of what I saw. And let him turn over to the other side.
And let him get up, perform wudu, and pray, and let him not tell anyone about it, for it will not harm him. How many etiquettes are there?
For the one who sees something he dislikes: we see that he gets up, spits on his left side three times, and says: I seek refuge in Allah from the evil of Shaytan and from the evil of what I saw. He turns over to the other side, performs wudu, prays two rak'ahs, and does not tell anyone.

The questioner : On the right side, the one on the ground.

The Shaykh : On the other side, on the left. If he is on the right, he turns to the left; if he is on the left, he turns to the right. The Messenger (peace and blessings be upon him) said: And we used to see dreams we disliked and would be ill for days. When this hadith reached us, meaning they acted upon it, they were saved from these problems that occur to them when they see what they dislike. Accordingly, whoever sees a dream he dislikes should do what the Prophet (peace and blessings be upon him) guided him to, and after that, it will not harm him.