Is it permissible to pray the greeting of the mosque during the prohibited times? And the Shaykh’s words on prayers with specific causes.

The questioner : Some young men asked me, when I entered the mosque at this prohibited time, to pray two rak'ahs as the greeting of the mosque. So what is the ruling...?

The Shaykh : This is correct. That is to say, the prohibition regarding prayer in all the times mentioned refers to voluntary prayer in general. As for what has a cause, such as a forgotten obligatory prayer that one remembers during a disliked time, he prays it. Or as for voluntary prayers that have a cause, where if the voluntary prayer is left, it is lost with the loss of the cause, these voluntary prayers with causes are prescribed to be prayed in the disliked times. There are many, and very many, hadiths indicating this principle adopted by Imam al-Shafi'i (may Allah have mercy on him) and those who followed him. There is also a very beneficial book by one of the hadith scholars in India titled "Informing the People of the Era of the Rulings on the Two Rak'ahs of the Fajr Sunnah." One of the benefits of this book is that it collected the hadiths related to these voluntary prayers that have causes. Among them is a hadith narrated by Imam al-Tirmidhi and others, such as Ahmad, from the Prophet (peace and blessings be upon him): that he prayed Fajr one day, and when he finished the prayer, he saw a man rising to pray, so he said to him: . When the man had prayed, he said: "O Messenger of Allah, I entered the mosque and the prayer had been established, so I prayed with you, and I had not yet prayed the two rak'ahs of Fajr. So these are the two." That is, what he prayed after the obligatory prayer is the Fajr Sunnah. So he (peace and blessings be upon him) remained silent, and his silence here was an approval of the permissibility of praying the Fajr Sunnah after the obligatory prayer. Along with the hadith you mentioned earlier: . But since these two rak'ahs were left due to the obligation to join the established prayer, and the impermissibility of starting a prescribed voluntary prayer before the obligatory one, based on his saying (peace and blessings be upon him): . So this person who missed the two rak'ahs of the Fajr Sunnah, that was not from him due to laziness or neglect or lack of interest in this Sunnah, but rather from his preference for following his saying (peace and blessings be upon him): . So this person exerted effort and prayed the two rak'ahs after Fajr, and he (peace and blessings be upon him) approved him, so it became a Sunnah for us that if we enter the mosque and the prayer has been established, and we have not yet prayed the Fajr Sunnah, it is permissible for us to pray it after the obligatory prayer. So this is an exception to the hadith: with these two rak'ahs. It is then said: "Come forward, our brothers, come forward as much as you can."
Likewise, among the exceptions is what came in "Muwatta Malik" and "Sunan Abu Dawud" and others, that the Prophet (peace and blessings be upon him), during the Farewell Pilgrimage, when he prayed Fajr in the Musjid al-Khaif and finished the prayer, saw two men far from the prayer, and it appeared to him (peace be upon him) that they had not prayed with him, so he said to them: . They said: "Yes, O Messenger of Allah." He said: . They said: "O Messenger of Allah, we had already prayed in our tents." So he (peace and blessings be upon him) said: . So you see here that they prayed a voluntary prayer after the obligatory Fajr prayer (peace and blessings be upon him); so this is another exception to this authentic hadith: . So the meaning of "except for one who prayed the Fajr Sunnah" is except for one who had prayed the obligatory prayer in his tent and then came to the mosque while they were praying, so he prays with them, even if it was a disliked time, because joining the congregation here overrides the dislike of praying in a disliked time.