If one hears the beginning of the adhan but not the end, or the end but not the beginning, how should he follow?

The Shaykh : This is an important question. If a person hears the end of the adhan but not the beginning, or the beginning but not the end, this happens often. For example, a person might be passing by a mosque in a car, hear the adhan, and then the sound disappears due to the car's movement. Does he continue, or do we say that this dhikr is tied to a cause, and since the cause has now ceased, he does not continue? That is one case. The second case is a person who was in a room and did not hear the mu'adhdhin, then he went out to the open area and heard the end of the adhan. Do we say that he should respond to the mu'adhdhin or not? It appears in the second case that he should respond. But do we say, "Respond to the mu'adhdhin now, and then complete what was missed after the adhan is finished"? No, we do not see this, because if he did that, the order of the adhan would be disrupted, and "Hayya 'ala al-salah" and "Hayya 'ala al-falah" would come before "Allahu Akbar" and "I bear witness that there is no god but Allah." Rather, we say: This is the adhan, so respond from the beginning of the adhan, and then follow the mu'adhdhin in its end. As for the first case, you have understood the ruling: if the mu'adhdhin's voice is cut off, the following is cut off. Yes.

The questioner : ... .

The Shaykh : What?