What is the ruling on missing the congregational prayer in the mosque due to attending a session of knowledge?

The questioner : My Shaykh, I asked you last year the same question as today’s question, regarding the permissibility of missing the congregation for an excuse or a dispensation of knowledge. Your answer last year was based on the condition that if this person sitting and listening needs this lesson, for example,The Shaykh : Nasser does not come to this area except once every two or three months, or once a year, or something like that. So if he needs this knowledge or this fatwa that is being discussed at the current time, then he may miss the congregation. But today we heard, as if the answer is a general one for anyone who needs this fatwa and this lesson, even if he does not have a need for it?

The Shaykh : It is not said: “even if he does not have a need for it.” It is said generally, and that is sufficient.

The questioner : Generally, yes, yes.

The Shaykh : Yes, it is not said “even if he does not have a need for it,” because we did not say it that way.

The questioner : Generally, meaning yes.

The Shaykh : Yes, therefore the general is specified by the particular. The wise Shari'ah, which does not miss anything except by intention, brings a general text first, then brings a particular text. So what about the incapable person?

The questioner : I mean, my understanding is a bit old...

The Shaykh : No, your understanding is fine, may Allah bless you. But I am telling you now: do not say it is general even if there is no need. I did not say it that way. But now, qualify what you heard just now with what you heard at that time, because that statement was correct, but the situation at that time required me to give this warning. Now the statement was general.
The student : Correct, my Shaykh. At that time, I said to some of the brothers, “Are you going to the mosque or not?” I said, “My Shaykh, whoever wants to go, let him go.” And if this statement we are discussing now has knowledge in it... I stopped the questions because the number decreased, and I said that you want to pray in this time as well, and we went to the prayer...The Shaykh : He needed to pray the 'Isha' prayer... so he saidThe Shaykh : Between me wanting to pray and you going to pray, the statement we are discussing would be known, for example... I mean, your statement is correct.