Mentioning the invalidators of wudu: First: What comes out of the two passages

The Shaykh : Pay attention to me, for I love that we take the rulings from the Qur'an as much as possible. To which of the two states of impurity is this a reference? The minor one and the excrement. In its original sense, "gha'it" (excrement) means the low-lying place on the earth. This is its original meaning, and people still use it today; a person might say, "I swam in water that is far away in the lowlands," meaning water in a distant, low-lying area. So, "gha'it" originally means a low-lying place. Why is what comes out of the body, the disgusting excrement, called "gha'it"? Because in the beginning, when they wanted to do this, they would go outside the town to the low-lying places to relieve themselves. Yes, they would frequent these low-lying places to relieve their need, so they used the word for the place to refer to the state of impurity itself, out of aversion to mentioning it by its actual name. Do you understand now? Good.
What are the invalidators of wudu? Excrement invalidates wudu. Everything that comes out of the front or back passage is an invalidator of wudu. Take this rule: everything that comes out of the passages, even if it is pure, even if it has no substance, invalidates wudu. For this reason, the Prophet (peace and blessings be upon him) said when a man complained to him that he thought he had broken his wudu during his prayer: And this wind that comes out of the back passage has no substance, yet it invalidates wudu.