If the Shaykh al-Islam says of a certain hadith, "al-Tirmidhi graded it hasan, but there is a problem with its chain," does he mean that it is weak?

The questioner: His EminenceThe Shaykh : If the Shaykh al-Islam, for example, says of a certain hadith, "al-Tirmidhi graded it hasan, but there is a problem with its chain," does he mean that it is weak? May Allah reward you with good.

The Shaykh : Yes, that is exactly what is intended, without a doubt; and that is for two reasons:
The first reason is that al-Tirmidhi (may Allah have mercy on him) is known for his leniency and tolerance in what he attributes to many of the hadiths in his book, either authenticating them or weakening them.
The second point is that when a scholar says of a certain chain, a certain hadith, or a certain narrator, "there is a problem with it," there is no doubt that this phrase indicates weakness in the thing about which the problem is noted. In fact, it is well known among those engaged in the science of hadith that al-Bukhari (may Allah have mercy on him) had a stricter convention in criticizing narrators regarding this phrase... "there is a problem with it"; they considered those about whom al-Bukhari said "there is a problem with him" to be of the most severe degree of weakness, not merely that they are weak. Therefore, if Ibn Taymiyyah (may Allah have mercy on him) says of a chain that al-Tirmidhi graded as hasan, "there is a problem with it," he is referring to the principle we mentioned earlier, namely that al-Tirmidhi is generally lenient, and that this leniency of his in this specific chain has also been realized. A student of knowledge should not rely on this judgment because it came from a lenient scholar, and he must review the chain to verify what Ibn Taymiyyah drew attention to.