What is the ruling on wearing the abaya without putting one's hands in the sleeves outside of prayer?

The questioner : I have observed among the brothers in Najd.

The Shaykh : In?

The questioner : In Najd.

The Shaykh : Najd.

The questioner : They wear the abaya in a seated position without putting their hands in the sleeves. I asked some of the brothers; I mean, I see, I am sorry, I seek forgiveness from Allah, I know that your opinion on this is that it is arrogance, so I presented your statement to them, and they said: Here, there is a customary practice that is considered a habit. So, is it permissible to wear it in this form if it is a customary practice?

The Shaykh : This is a statement... regarding matters where there is no explicit text, such as: This statement regarding observing custom is, as we mentioned earlier, regarding travel, so it is a legal principle, but it is conditional that it does not contradict a legal text. So, if there were only the observation of custom here, their statement that there is no objection would be correct, but this falls under the general prohibition of letting the garment hang down in prayer.
The student : So it is conditional... upon prayer.

The Shaykh : How?
The student : I say this to draw attention to the fact that this is conditional within prayer, whereas outside of prayer, there is no harm.

The Shaykh : That is correct.
The student : No, they wear it in prayer.

The Shaykh : You mentioned in prayer.
The student : No, my Shaykh, I did not say in prayer.
Another student: They wear it in prayer.
Another student: They put their hands in the sleeves in prayer.

The Shaykh : They put them in.
The student : But outside of prayer, they leave them like this and walk.

The Shaykh : Here, the custom they mentioned applies, but as long as it is in prayer, the issue is resolved.
The student : May Allah reward you with good.