What does one do if she sees in her dream what she dislikes?

The Shaykh : No, this questioner says that she dreamed that a snake was chasing her. It startled her. Knowing that the same dream had repeated itself, then stopped, and then returned to her in Makkah, what should she do?
I am one of those who interpret dreams, but I do not know how to interpret this one. However, I advise my brother listeners to follow what our Prophet (peace and blessings be upon him) guided us to, where he said: Let him spit to his left three times and say: I seek refuge and from the severity of his illness. I seek refuge , and , and I will not make the other sin. How many times? For the one who sees what he dislikes, he should get up and spit to his left three times, and say: I seek refuge in Allah from the evil of Shaytan and from the evil of what I saw, and turn over to the other side, perform wudu, and pray two rak'ahs, and not tell anyone about it, to the right with. To the other side, to 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: Then it will not harm him. The Companions (may Allah be pleased with them) said: We used to see dreams we disliked and we would chew them for days. When this hadith reached us, meaning we dealt with it, they understood 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 to, and after that, what he saw will not harm him. This questioner asks: How do I return the salam to someone who greeted me while I am praying?