What is the ruling on swallowing blood, phlegm, and the like for a person who is fasting?

Question:
If phlegm is in the throat, and I intentionally gather it in the throat and then swallow it while I am fasting, what is the ruling?

Answer:
It seems you have obsessions. What is in the throat does not harm, but if it reaches the mouth, it is not permissible to swallow it; you should spit it out. As for what comes from the throat, it does not harm.
Q: If I gather it in the mouth intentionally?
A: If it comes from the throat, it does not harm, whether you gathered it or not, as long as it is in the throat and has not gone outside.
Q: I inhaled water on a day when I was fasting, and then it entered the throat?
A: If you did not do it intentionally, you owe nothing. However, the recommended practice is for the fasting person not to exaggerate; he should not exaggerate in inhaling water.
Q: It came up from the stomach to the throat, and then I intentionally swallowed it again?
A: As long as it did not go out, it does not harm.
Q: What is the ruling on blood if it comes down into the mouth and then I intentionally swallow it?
A: If you do it intentionally, you break your fast if it reaches the mouth.
Q: Regarding the ruling on inhaling water, I asked our Shaykh, and he said: You break your fast?
A: No, if you intentionally swallow blood, you break your fast.
Q: Regarding the ruling on inhaling water?
A: If it was in the course of inhaling, but the water overcame you.
Q: I asked our Shaykh and said to him: I inhaled and did not intend it, and it entered the throat.
A: It does not harm.
Q: He said: You break your fast?
A: No, you do not break your fast. He has no news of that. If you did not do it intentionally, you owe nothing.
Q: Do we not take his statement into account?
A: You owe nothing.