What is the ruling on the two rak'ahs after the witr?

The questioner : Shaykh, regarding the standing in the two rak'ahs after the witr, in the wording of the hadith: ; what does that mean?

The Shaykh : They were for him in place of the two rak'ahs after the witr; if he prays them after the witr, he will have made up what he missed of what he could not do if he did not wake up; that is, it is not established that the Messenger (peace and blessings be upon him) used to pray two rak'ahs after the witr? It says that this traveler, what did he say? I think it was hardship and heaviness, so if one of you prays the witr, let him pray two rak'ahs, if he wakes up - meaning: let him pray in the night - otherwise - if he does not wake up - they will be recorded for him in place of what he might miss.
Clear? If Allah wills.

The questioner : Regarding after the witr prayer ... Ramadan three times, are they after every witr or specific?

The Shaykh : Every witr in Ramadan and other than Ramadan.

The questioner : Subhan Allah, and alhamdulillah, and la ilaha illa Allah, and Allahu Akbar, are they said after every obligatory prayer, or is it possible?

The Shaykh : What is possible?

The questioner : That one does not say them ... .

The Shaykh : It is possible, of course, because it is not obligatory; they are among the virtues of deeds; whoever wishes to increase in virtue and reward says them, otherwise let his practice be according to the practice of that Bedouin who said: By Allah, O Messenger of Allah, I do not add to them or subtract from them.