The ruling on praying the greeting of the mosque after the witr

The questioner : Honorable Shaykh, if a person prays the tarawih prayer, then prays the witr, then goes home, and then goes to one of the mosques to listen to one of the lectures, does he pray the greeting of the mosque when he enters that mosque? The second questioner.

The Shaykh : This issue should be understood well. The Prophet (peace and blessings be upon him) said: He did not say, "Do not pray after the witr." There is a difference between the two. There is a difference between the two expressions. If he had said, "Do not pray after the witr," we would say:
Do not pray after the witr, neither in your house nor upon entering the mosque. Rather, there would be a conflict between this hadith and the hadith: It is often mentioned, but the Messenger of Allah (peace and blessings be upon him) said, "Make the last of your prayer at night the witr." This means that if you conclude your night prayer with the witr, and if it happens that you pray after that, there is no harm.
As long as you prayed the witr while thinking that you would not pray after it, then if you pray after it, there is no harm. An example of this is a man who prays the witr with the imam, intending not to pray, and then it happens that he gets up at the end of the night.
And he said, "I would like to make use of the end of the night by praying," so he prayed. Is it permissible or not permissible? It is permissible, because the Messenger of Allah (peace and blessings be upon him) did not say, "Do not pray after the witr." He said, "Make the last of your prayer at night the witr." And I have made the last of my prayer at night the witr, and I have prayed the witr, but it happened that I said, "I will pray two rak'ahs." The night prayer is prayed in pairs. Fine. But if there is a reason, this is clearer and clearer. If there is a reason for praying after the witr, this is clearer and clearer. For example, you prayed the witr in your mosque, then you went to another mosque and found the people praying. Enter with them, pray with them. If they pray the witr, stand up after the witr and add a rak'ah. Complete it with a rak'ah so that it becomes even, because you have already prayed the witr before. Likewise, if you enter the mosque, pray two rak'ahs as the greeting of the mosque, because the Prophet (peace and blessings be upon him) said: Yes.