ʿAbdullah bin ʿUmar set out for Umra during the period of afflictions, and he said, "If I should be stopped from visiting the Kaʿba, I will do what we did when we were with Messenger of Allah ﷺ." He assumed Ihram for ʿUmra in the year of Al-Hudaibiya.
عَنِ الْبَيْتِ صَنَعْنَا كَمَا صَنَعْنَا مَعَ رَسُولِ اللَّهِ ﷺ فَأَهَلَّ بِعُمْرَةٍ مِنْ أَجْلِ أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ أَهَلَّ بِعُمْرَةٍ عَامَ الْحُدَيْبِيَةِ