Narrated Umar ibn al-Khattab:

I sought permission of the Prophet ﷺ to perform umrah. He gave me permission and said: My younger brother, do not forget me in your supplication.

He (Umar) said: He told me a word that pleased me so much so that I would not have been pleased if I were given the whole world.

The narrator Shu'bah said: I then met Asim at Medina. He narrated to me this tradition and reported the wordings: "My younger brother, share me in your supplication."

حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، حَدَّثَنَا شُعْبَةُ، عَنْ عَاصِمِ بْنِ عُبَيْدِ اللَّهِ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ، عَنْ أَبِيهِ، عَنْ عُمَرَ، - رضى الله عنه - قَالَ اسْتَأْذَنْتُ النَّبِيَّ ﷺ فِي الْعُمْرَةِ فَأَذِنَ لِي وَقَالَ " لاَ تَنْسَنَا يَا أُخَىَّ مِنْ دُعَائِكَ " . فَقَالَ كَلِمَةً مَا يَسُرُّنِي أَنَّ لِي بِهَا الدُّنْيَا قَالَ شُعْبَةُ ثُمَّ لَقِيتُ عَاصِمًا بَعْدُ بِالْمَدِينَةِ فَحَدَّثَنِيهِ وَقَالَ " أَشْرِكْنَا يَا أُخَىَّ فِي دُعَائِكَ " .