question #2 Sahih Muslim 685b, Book 6, Hadith 2 : What is the significance of maintaining the original number of rak’ahs for travelers in Islam?

‘A’isha, the wife of the Messenger of Allah (ﷺ), said Allah prescribed the prayer as two rak’ahs, then it was completed (to four rak’ahs) at the place of residence, but was retained in the same position in journey as it was first made obligatory.