حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ حَدَّثَنَا شُعْبَةُ عَنْ جَابِرٍ سَمِعْتُ سَالِمَ بْنَ عَبْدِ اللَّهِ يُحَدِّثُ عَنِ ابْنِ عُمَرَ قَالَ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَا يُصَلِّي فِي السَّفَرِ إِلَّا رَكْعَتَيْنِ غَيْرَ أَنَّهُ كَانَ يَتَهَجَّدُ مِنْ اللَّيْلِ قَالَ جَابِرٌ فَقُلْتُ لِسَالِمٍ كَانَا يُوتِرَانِ قَالَ نَعَمْ
مسند امام احمد بن حنبل · Hadith 5590
It was narrated that Ibn 'Umar said: The Messenger of Allah (PBUH) did not offer any prayers when travelling except two-rak'ahs , but he used to pray tahajjud at night. He (the narrator) said: And Ibn 'Umar did not offer any prayers when travelling except two-rak'ahs, and he used to pray tahajjud at night. Jaabir said: I said to Baalim: Did they pray Witr? He said: Yes.
Sanad
حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ حَدَّثَنَا شُعْبَةُ عَنْ جَابِرٍ سَمِعْتُ سَالِمَ بْنَ عَبْدِ اللَّهِ يُحَدِّثُ عَنِ ابْنِ عُمَرَ