He said to 'Abdullah bin 'Umar: "We find (mention of) prayer when one is at home (i.e., not traveling) and prayer at times of fear in the Qur'an, but we do not find any mention in the Qur'an of prayer when traveling. Ibn Umar said to him: 'O son of my brother, Allah (SWT) send Muhammad ﷺ to us when we did not know anything, and all we should do is to do that which we saw Muhammad ﷺ doing.'" (Using translation from Nasāʾī 1434)
لَهُ ابْنُ عُمَرَ ابْنَ أَخِي إِنَّ اللهَ ﷻ بَعَثَ إِلَيْنَا مُحَمَّدًا ﷺ وَلَا نَعْلَمُ شَيْئًا فَإِنَّمَا نَفْعَلُ كَمَا رَأَيْنَا مُحَمَّدًا يَفْعَلُ