The ruling on shortening the prayer for one who intends to stay for more than four days

The questioner says: Your Eminence, I am from the Qassim region and I came to Riyadh to study for three years. Is it permissible for me to shorten the prayer for this duration? And is it obligatory for me to perform the regular voluntary prayers?
Answer: It is obligatory for you to pray four rak'ahs with the people; you pray four rak'ahs with the people in the mosques. As long as you intend to stay for more than four days, according to the majority of the scholars, it is obligatory for you to pray four rak'ahs with the people. It is recommended for you to pray four rak'ahs before the midday prayer with two taslims, and two rak'ahs after it. If you pray four rak'ahs after it, that is better. You pray four rak'ahs before the afternoon prayer; this is better. It is not a regular voluntary prayer, but it is better. You pray four rak'ahs before the afternoon prayer with two taslims, based on the authentic hadith: After the sunset prayer, one taslim and two rak'ahs. After the night prayer, one taslim and two rak'ahs. Before the dawn prayer, one taslim and two rak'ahs. All of these are regular voluntary prayers. It is recommended for you to pray them and not shorten, but to complete the prayer with the people, because this duration is long. Yes.
The presenter: Okay, and the regular voluntary prayers as well, do you maintain them, Your Eminence?
The Shaykh: You maintain them, and the witr prayer. Yes.
The presenter: Okay, may Allah reward you with good.