The permission for the concessions of travel is conditional on the duration of residence not exceeding four days
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Q: I am informing you that I and my sick brother are currently located in the Republicof the Czech Republicin Europe with a group of Muslims who came here for treatment, and we ask you, may Allah preserve you, to issue a ruling on these two questions: 1- Is it permissible for usto combine and shorten the prayers of Dhuhr and Asr, and the prayers of Maghrib and Isha, or to combine only, or to shorten only? Knowing that some are able to go to the prayer place prepared for performing the obligatory prayers, while others are not able to do so? 2- What isthe minimum number of followers required to establish the Friday prayer? Thanking you for your good cooperation.
A1: If you intend to reside for more than four days, it is not permissible for you to shorten the prayers, because the rulings of travel are severed by such a residence. As for combining, it is permissible for the sick person to do so if leaving it causes him hardship. And whoever is able to go to the prayer hall prepared for performing the obligatory prayers must perform the prayer there with the Muslim congregation. 2- It is not permissible for you to establish the Friday prayer independently, because you are not residents. However, if there is a mosque in the town around you where the Friday prayer is established, then you should pray with them.
A1: If you intend to reside for more than four days, it is not permissible for you to shorten the prayers, because the rulings of travel are severed by such a residence. As for combining, it is permissible for the sick person to do so if leaving it causes him hardship. And whoever is able to go to the prayer hall prepared for performing the obligatory prayers must perform the prayer there with the Muslim congregation. 2- It is not permissible for you to establish the Friday prayer independently, because you are not residents. However, if there is a mosque in the town around you where the Friday prayer is established, then you should pray with them.
Source
www.alifta.gov.sa
The Arabic text is copied verbatim from the original source, without any edits.