(25) Chapters on Hajj Rituals
كتاب المناسك
(5) Chapter: The virtue of the pilgrim’s supplication
(5) باب فَضْلِ دُعَاءِ الْحَجِّ
Sunan Ibn Majah 2894 
It was narrated from Ibn ‘Umar (from ‘Umar) that he asked the Prophet (ﷺ) for permission to perform ‘Umrah, and he gave him permission and said to him:
“O younger brother, give us a share of your supplication, and do not forget us.”
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 ‏"‏ ‏.‏
Grade :  Da’if (Darussalam)
Reference : Sunan Ibn Majah 2894
In-book reference : Book 25, Hadith 13
English translation : Vol. 4, Book 25, Hadith 2894