Explanation of the author's statement: "… and a long or short forbidden interval invalidates both …"

The Shaykh : He said "and a long interval invalidates both". The pronoun "both" refers to the adhan and the iqamah. A long interval invalidates them. What is the reason? The condition of continuity. If continuity is a condition, then a long interval invalidates them. So if a person says Allahu Akbar and completes the four takbirs, then turns away, performs wudu, and returns, this adhan is not valid. He must start the adhan anew. If he says the four takbirs, then goes to his house, eats dinner, and returns, can he complete it? No, he cannot complete it, because he separated them with a long interval. "and a short forbidden interval". A short forbidden interval invalidates them. This is because what is forbidden is contrary to worship. For example, a man is calling the adhan and there is a group of people talking during the adhan. He turns to them and says, "So-and-so is like this and like this," backbiting him. Backbiting is forbidden, indeed it is one of the major sins. We say now that he must repeat the adhan, because the adhan has become invalid. This often happens on trips. This happens on trips with some people. You find a group has gathered, then the adhan is called, and they talk about a person, then he says, "No, the one hidden from you is worse; he is like this and like this." This means it is backbiting, and backbiting is one of the major sins, so it invalidates the adhan, and he must repeat it, even though it may be only one or two words. But because it is forbidden… Now, regarding his statement "a short forbidden interval," if it is a short permissible interval, such as if a questioner asks him while he is calling the adhan, "Where is so-and-so?" and he says, "He has gone," or "Where is the book?" and he says, "It is in such-and-such a place," or something similar, then this is a short permissible interval, so it does not invalidate it.