حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ سُفْيَانَ، عَنْ عَاصِمِ بْنِ عُبَيْدِ اللَّهِ، عَنْ سَالِمٍ، عَنِ ابْنِ عُمَرَ، عَنْ عُمَرَ، أَنَّهُ اسْتَأْذَنَ النَّبِيَّ ـ صلى الله عليه وسلم ـ فِي الْعُمْرَةِ فَأَذِنَ لَهُ وَقَالَ ‏"‏ يَا أُخَىَّ أَشْرِكْنَا فِي شَىْءٍ مِنْ دُعَائِكَ وَلاَ تَنْسَنَا ‏"‏ ‏.‏

It wasnarrated from Ibn ‘Umar (from ‘Umar) that he asked the Prophet(PBUH) for permission to perform ‘Umrah, and he gave him permissionandsaid to him: “O younger brother, give us a share of yoursupplication,and do not forget us.” Translation Not Available

Book Ref: Sunan Ibn Majah Book 25 Hadith 2894
Web Ref:  Sunan Ibn Majah Vol 4 Book 25 Hadith 2894