Sahih Muslim Book - 6, Hadith - 1584

حَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ وَمُحَمَّدُ بْنُ بَشَّارٍ جَمِيعًا عَنِ ابْنِ مَهْدِىٍّ - قَالَ زُهَيْرٌ حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِىٍّ - حَدَّثَنَا شُعْبَةُ عَنْ يَزِيدَ بْنِ خُمَيْرٍ عَنْ حَبِيبِ بْنِ عُبَيْدٍ عَنْ جُبَيْرِ بْنِ نُفَيْرٍ قَالَ خَرَجْتُ مَعَ شُرَحْبِيلَ بْنِ السِّمْطِ إِلَى قَرْيَةٍ عَلَى رَأْسِ سَبْعَةَ عَشَرَ أَوْ ثَمَانِيَةَ عَشَرَ مِيلاً فَصَلَّى رَكْعَتَيْنِ. فَقُلْتُ لَهُ فَقَالَ رَأَيْتُ عُمَرَ صَلَّى بِذِى الْحُلَيْفَةِ رَكْعَتَيْنِ فَقُلْتُ لَهُ فَقَالَ إِنَّمَا أَفْعَلُ كَمَا رَأَيْتُ رَسُولَ اللَّهِ -صلى الله عليه وسلم- يَفْعَلُ.

It was narrated that Jubair bin Nufair said: "I went out with Shurahbil bin As-Simt to a village that was seventeen or eighteen miles away, and he prayed two Rak'ah. I said something to him and he said: 'I saw 'Umar, may Allah be pleased with him, pray two Rak'ah in Dhul-Hulaifah, and I said something to him, and he said: 'I only do what I saw the Messenger of Allah (s.a.w) do.'"