What is excepted during the times when prayer is prohibited?

Your Eminence! This letter before us is from the sender, Faisal Sa'id Gharman al-Shahri, from Bani Shahar in Tumanah, Al 'Albah village. He says in his letter: We request an inquiry regarding the following:
If a man enters the mosque a little before the Maghrib adhan, is it permissible for him to pray two rak'ahs before the adhan, or should he sit until the mu'adhdhin calls, or should he stand until the mu'adhdhin calls? Some people say: It is not permissible to bow before the Maghrib adhan, and some people say: It is not permissible to sit until you pray two rak'ahs as the greeting of the mosque. We request your guidance, may Allah guide you?
Answer: In the name of Allah, the Most Gracious, the Most Merciful. Praise be to Allah, and may Allah send blessings and peace upon the Messenger of Allah, upon his family and his Companions, and upon those who follow his guidance.
As for what follows: It is established from the Messenger of Allah (peace and blessings be upon him) that he said: , . This indicates the emphasis of these two rak'ahs for the one who enters the mosque.
The scholars differed regarding the one who enters during the times of prohibition; such as after 'Asr, or at sunset, or after the Fajr prayer. Does he pray these two rak'ahs or sit? There are two opinions among the scholars, the most correct and strongest of which is: that he prays them, he prays them even in the time of prohibition; because they are among the prayers with a cause. For this reason, the Prophet (peace and blessings be upon him) prescribed their performance upon entering the mosque. So if he enters the mosque after 'Asr, or after Fajr, or at sunset, the best is that he prays them and then sits. This is the best. And if he sits and does not pray them, there is no blame on him; because they are a recommended voluntary prayer and not obligatory according to the majority of the scholars. So they are a recommended practice and not obligatory. If he sits, there is no blame on him, and if he prays them, it is better, acting in accordance with this authentic hadith.
As for the hadiths prohibiting prayer after 'Asr and after Fajr, they are general, and the greeting of the mosque is excepted from them, and prayers with a cause are excepted from them. For example, the prayer of tawaf in Makkah: if one performs tawaf after 'Asr, there is no harm in praying the prayer of tawaf. And for example, the eclipse prayer: if the sun is eclipsed after 'Asr, the Sunnah is that the Muslims pray the eclipse prayer after 'Asr; because it is among the prayers with a cause. This is the stronger position. And if he sits, there is no blame on him. And it is not appropriate in such a dispute and disagreement, but rather tolerance is appropriate in this matter. So whoever prays has done well, and whoever sits has no blame on him, in order to get out of the disagreement of the scholars. Yes.