Did it come in the hadith when the mu'adhdhin says

Al-Halabi : The questioner asks and says that it has been reported from the Prophet (peace and blessings be upon him), or in some hadiths, that when the mu'adhdhin says, "I bear witness that there is no god but Allah, and I bear witness that Muhammad is the Messenger of Allah," the narrator of the hadith said: The questioner then asks: Do we also say this? And do we say this in the tashahhud or in the adhan?

The Shaykh : In the tashahhud in the prayer, do you mean?
Al-Halabi : Like this...

The Shaykh : The tashahhud in the prayer has no relation to this. As for the first question, the answer is yes. As I understand it, a person may be in a situation where he is not prepared to give the mu'adhdhin the full response, which is the best, as stated in the well-known hadith: to the end of the hadith. He may be in a situation where he is unable to follow the mu'adhdhin, so he shortens the response when the mu'adhdhin says twice, "I bear witness that there is no god but Allah, I bear witness that there is no god but Allah." The responder shortens it and says, "And I, and I." This includes everyone, and this is a beautiful sunnah (recommended practice) that facilitates for the Muslim not to miss all of the virtue from the start, though some of it is better than some. The best is to respond with the equivalent, as he said: But if the matter is between not responding with the equivalent and responding with this shortened phrase, "And I, and I," then this is undoubtedly better than leaving the response out entirely. Otherwise.