What is the authenticity of the hadith that the Messenger of Allah used to trim the length and width of his beard?

The Shaykh : I said earlier that there is no fabricated hadith, let alone one that is better than it, i.e., a weak hadith, stating that the Messenger of Allah (peace and blessings be upon him) did not trim. Rather, I am adding to them now: I say regarding a hadith narrated by al-Tirmidhi, one of the six books, But this hadith, in terms of its narration, has a very weak chain of transmission. Therefore, we do not dwell on it or circle around it, because it is not permissible for us to rely on a narration whose attribution to the Prophet (peace and blessings be upon him) has not been established. When those mentioned earlier did not find a hadith that the Messenger of Allah (peace and blessings be upon him) used to trim his beard, they stopped at the general text and said that it is obligatory to let the beard grow absolutely.