وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، ‏.‏ أَنَّ عُمَرَ بْنَ الْخَطَّابِ، لَمَّا قَدِمَ مَكَّةَ صَلَّى بِهِمْ رَكْعَتَيْنِ ثُمَّ انْصَرَفَ فَقَالَ يَا أَهْلَ مَكَّةَ أَتِمُّوا صَلاَتَكُمْ فَإِنَّا قَوْمٌ سَفْرٌ ‏.‏ ثُمَّ صَلَّى عُمَرُ بْنُ الْخَطَّابِ رَكْعَتَيْنِ بِمِنًى وَلَمْ يَبْلُغْنَا أَنَّهُ قَالَ لَهُمْ شَيْئًا ‏.‏

Yahya related to me from Malik from Ibn Shihab from Said ibn al-Musayyab that Umar ibn al-Khattab prayed two rakas with everybody whenhe arrived in Makka. Then, when he had finished, he said, "People ofMakka, complete your prayer, because we are a group of travellers."Later, Umar ibn al-Khattab prayed two rakas with them at Mina, but wehave not heard that he said anything to them on that occasion. Translation Not Available

Book Ref: Muwatta Imam Malik Book 20 Hadith 909
Web Ref:  Muwatta Imam Malik Book 20 Hadith 211