Combining the even-numbered and odd-numbered prayers, and the difference between Tarawih, Witr, and Tahajjud

The questioner:
Honorable Shaykh, he says: Is it permissible to combine the even-numbered and odd-numbered prayers with two tashahhuds and one taslim? And what is the difference between the Tarawih prayer, the Witr prayer, and the Tahajjud prayer?

The Shaykh:
No, you do not combine them with two tashahhuds. It is permissible to combine the even-numbered and odd-numbered prayers with one taslim, but you do not sit for the first tashahhud. You do not make it resemble the Maghrib prayer. The Prophet (peace and blessings be upon him) forbade making the Witr resemble the Maghrib prayer. So you make the tashahhud one, only at the time of taslim. You recite the rak'ahs in sequence, sit for the final sitting, recite the final tashahhud, and say the taslim. This is permissible and there is no harm in it. And separating the even-numbered from the odd-numbered is better. You pray two rak'ahs as the even-numbered, sit, recite the tashahhud, and say the taslim, then you stand up and perform the Witr rak'ah, sit for the tashahhud, and say the taslim. This is better and more complete. As for combining the even-numbered and odd-numbered with two tashahhuds, this is forbidden because it resembles the Maghrib prayer. This even-numbered is routine. What is the second question?

The questioner:
And what is the difference between the Tarawih prayer, the Witr prayer, and the Tahajjud prayer?

The Shaykh:
The difference between the Tarawih prayer and the Witr is well known. In the Tarawih prayer, one says the taslim after every two rak'ahs; one says the taslim after every two rak'ahs. The Prophet (peace and blessings be upon him) said: . As for the Witr, as you have heard, it is permissible to combine the Witr with one taslim, and it is permissible to make it with two taslims. This is the difference between them. Tahajjud is like Tarawih, two rak'ahs, two rak'ahs, but the Tahajjud is longer; it is longer than the Tarawih prayer. The righteous Salaf used to lengthen the Tahajjud greatly. They used to recite hundreds of verses of the Qur'an in a single rak'ah. They sometimes relied on sticks due to the length of standing. They used to tie ropes between the pillars and hold onto them due to the length of standing behind the imam. They did not leave until the dawn due to the length of standing. They would spend the night praying and performing Tahajjud. So in the Tahajjud, the standing, recitation, bowing, and prostration are lengthened, unlike the Tarawih, which is made light to be considerate of the people. Yes.
And the Tahajjud is only in the last ten nights of Ramadan. As for the first twenty nights, you pray only the Tarawih. Yes.