We ask you, Honorable Shaykh, to briefly explain to us the things that invalidate fasting.

Question:
And this is Sami saying: We ask you, Honorable Shaykh, to briefly explain to us the things that invalidate fasting.

Answer:
The things that invalidate fasting, briefly, are of two types: those that enter the stomach or those that exit the stomach. Those that enter the stomach are like eating and drinking, feeding injections, and medications that are swallowed in pill form and go into the stomach. These break the fast of the one fasting. Also, like blood transfusions; giving a patient a blood transfusion breaks the fast because it goes into the stomach and the veins. As for those that exit the stomach, such as menstruation and post-natal bleeding for a woman, because it weakens her, and the exit of blood and fasting do not combine for her, because this weakens her.
And like the emission of semen. The emission of semen also invalidates the fast, and it exits from the stomach. And Allah (Exalted and Majestic is He) says that he left his desire, his food, and his drink. So this is from the forbidden desire, and it invalidates the fast, whether it is by masturbation, whether the extraction of semen is by masturbation or by intercourse. If it is by masturbation, it invalidates the fast and obligates making up the day only, and repentance to Allah.
And if it is by intercourse, it obligates repentance to Allah, making up the day, the expiation, and . And also from what exits that breaks the fast is extracting a large amount of blood from the body, either by cupping, either by cupping, or by medical extraction, whether he wants to treat the patient with it, or wants to treat by extracting blood. This breaks the fast; it broke the fast of the one fasting, because the Prophet (peace and blessings be upon him), when he saw a man cupping while fasting, said: "The one who cups and the one who is cupped have broken their fast." Cupping breaks the fast because it extracts the blood by which his strength is maintained. And fasting weakens him, so this and this do not combine for him.
As for if he is wounded and blood comes out of him without his choice, this does not affect his fast because it is without his choice. Or if he gets a nosebleed. He gets a nosebleed. And blood flows from him without his choice; this does not break the fast. And from what exits that breaks the fast is vomiting, which is the expulsion of what is in the stomach of food or drink. If he does it intentionally, it invalidates his fast. But if the vomiting overcomes him and he is overcome by it without his choice, this does not affect his fast. These are the things that break the fast, briefly. Yes.