حَدَّثَنَا أَبُو بَكْرِ بْنُ خَلاَّدٍ الْبَاهِلِيُّ، حَدَّثَنَا أَبُو عَامِرٍ، عَنْ عِيسَى بْنِ حَفْصِ بْنِ عَاصِمِ بْنِ عُمَرَ بْنِ الْخَطَّابِ، حَدَّثَنِي أَبِي قَالَ، كَنَّا مَعَ ابْنِ عُمَرَ فِي سَفَرٍ فَصَلَّى بِنَا ثُمَّ انْصَرَفْنَا مَعَهُ وَانْصَرَفَ ‏.‏ قَالَ فَالْتَفَتَ فَرَأَى أُنَاسًا يُصَلُّونَ فَقَالَ مَا يَصْنَعُ هَؤُلاَءِ قُلْتُ يُسَبِّحُونَ ‏.‏ قَالَ لَوْ كُنْتُ مُسَبِّحًا لأَتْمَمْتُ صَلاَتِي يَا ابْنَ أَخِي إِنِّي صَحِبْتُ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ فَلَمْ يَزِدْ عَلَى رَكْعَتَيْنِ فِي السَّفَرِ حَتَّى قَبَضَهُ اللَّهُ ثُمَّ صَحِبْتُ أَبَا بَكْرٍ فَلَمْ يَزِدْ عَلَى رَكْعَتَيْنِ ثُمَّ صَحِبْتُ عُمَرَ فَلَمْ يَزِدْ عَلَى رَكْعَتَيْنِ ثُمَّ صَحِبْتُ عُثْمَانَ فَلَمْ يَزِدْ عَلَى رَكْعَتَيْنِ حَتَّى قَبَضَهُمُ اللَّهُ وَاللَّهُ يَقُولُ ‏ End hadith 2‏ ‏.‏

It wasnarrated from ‘Isa bin Hafs bin ‘Asim bin ‘Umar bin Khattabthat his father told him: “We were with Ibn ‘Umar on a journey,and he led us in prayer. Then we finished with him and he finishedturning around, and saw some people praying. He said: ‘What arethese people doing?’ I said: ‘Glorifying Allah.’* He said: ‘IfI wanted to glorify Allah (perform voluntary prayer) I would havecompleted my prayer. O son of my brother! I accompanied the Messengerof Allah (PBUH) and he never prayed more than two Rak’ah when he wastraveling, until Allah took his soul. Then I accompanied Abu Bakr andhe never prayed more than two Rak’ah (when he was traveling), untilAllah took his soul. Then I accompanied ‘Umar and he never prayedmore than two Rak’ah, until Allah took his soul. Then I accompanied‘Uthman and he never prayed more than two Rak’ah, until Allahtook his soul. Allah says: ‘Indeed in the Messenger of Allah(Muhammad (PBUH)) you have a good example to follow.’” [33:21] Translation Not Available

Book Ref: Sunan Ibn Majah Book 5 Hadith 1071
Web Ref:  Sunan Ibn Majah Vol 1 Book 5 Hadith 1071