(1) باب صَلاَةِ الْمُسَافِرِينَ وَقَصْرِهَا
Jubair b. Nufair reported:
I went along with Shurahbil b. al-Simt to a village which was situated at a distance of seventeen or eighteen miles, and he said only two rak'ahs of prayer. I said to him (about it) and he said: I saw 'Umar observing two rak'ahs at Dhu'l-Hulaifa and I (too) said to him (about it) and he said: I am doing the same as I saw the Messenger of Allah (ﷺ) doing. (ID)
Reference (ID): Sahih Muslim 692 a (ID)
In-book reference (ID): Book 6, Hadith 15 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1472 (ID)