Mishkat al-Masabih
Mishkat al-Masabih 2248
وَعَنْ عُمَرَ بْنِ الْخَطَّابِ رَضِيَ اللَّهُ عَنْهُ قَالَ اسْتَأْذَنْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي الْعُمْرَةِ فَأَذِنَ لِي وَقَالَ: «أَشْرِكْنَا يَا أُخَيُّ فِي دُعَائِكَ وَلَا تَنْسَنَا» . فَقَالَ كَلِمَةً مَا يَسُرُّنِي أَنَّ لِيَ بِهَا الدُّنْيَا. رَوَاهُ أَبُو دَاوُدَ وَالتِّرْمِذِيُّ وَانْتَهَتْ رِوَايَتُهُ عِنْدَ قَوْلِهِ «لَا تنسنا»
‘Umar ibn al-Khattab (may God be pleased with him) reported: I asked the Prophet (peace be upon him) for permission to perform ‘umrah, and he gave me permission and said, ‘My dear brother, include us in your supplications and do not forget us.’ He said a word that I would not exchange for the whole world. Abu Dawud and al-Tirmidhi transmitted it; al-Tirmidhi’s version ends with ‘do not forget us.’ The Arabic source grades it weak (al-Albani).