وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّهُ كَانَ يُسَافِرُ مَعَ ابْنِ عُمَرَ الْبَرِيدَ فَلاَ يَقْصُرُ الصَّلاَةَ ‏.‏

Yahya related to me from Malik from Nafi that he used to travelone mail-stage with Ibn Umar, and he would not shorten the prayer. Translation Not Available

Book Ref: Muwatta Imam Malik Book 9 Hadith 344
Web Ref:  Muwatta Imam Malik Book 9 Hadith 16