Praying When Outside When In A Foreign Country
In such cases you can perform your prayer while walking, or sitting. This is allowed. Allah says in the Quran: إِنْ خِفْتُمْ فَرِجَالًا أَوْ رُكْبَانًا ۖ فَإِذَا أَمِنتُمْ فَاذْكُرُوا اللَّهَ كَمَا عَلَّمَكُم مَّا لَمْ تَكُونُوا تَعْلَمُونَ ‎ Then if you fear any danger, pray on foot or while riding, in whichever way you like, but when circumstances become secure, remember God in the very manner He has taught you, which you knew not. (2: 239)