Narrated by:Nafi`
Narrated Nafi`:`Abdullah bin `Umar set out for Umra during the period of afflictions, and he said, "If I should be stopped from visiting the Ka`ba, I will do what we did when we were with Allah's Messenger (ﷺ)." He assumed Ihram for `Umra in the year of Al-Hudaibiya.
حَدَّثَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ ـ رضى الله عنهما ـ خَرَجَ مُعْتَمِرًا فِي الْفِتْنَةِ فَقَالَ إِنْ صُدِدْتُ عَنِ الْبَيْتِ، صَنَعْنَا كَمَا صَنَعْنَا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم. فَأَهَلَّ بِعُمْرَةٍ مِنْ أَجْلِ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ أَهَلَّ بِعُمْرَةٍ عَامَ الْحُدَيْبِيَةِ.
Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) • Hadith 223