It is disliked to carry arms on 'Eid and in the Haram
حَدَّثَنَا أَحْمَدُ بْنُ يَعْقُوبَ، قَالَ حَدَّثَنِي إِسْحَاقُ بْنُ سَعِيدِ بْنِ عَمْرِو بْنِ سَعِيدِ بْنِ الْعَاصِ، عَنْ أَبِيهِ، قَالَ دَخَلَ الْحَجَّاجُ عَلَى ابْنِ عُمَرَ وَأَنَا عِنْدَهُ، فَقَالَ كَيْفَ هُوَ فَقَالَ صَالِحٌ. فَقَالَ مَنْ أَصَابَكَ قَالَ أَصَابَنِي مَنْ أَمَرَ بِحَمْلِ السِّلاَحِ فِي يَوْمٍ لاَ يَحِلُّ فِيهِ حَمْلُهُ، يَعْنِي الْحَجَّاجَ.
Narrated Sa`id bin `Amr bin Sa`id bin Al-`Aas: Al-Hajjaj went to Ibn `Umar while I was present there. Al-Hajjaj asked Ibn `Umar, "How are you?" Ibn `Umar replied, "I am all right," Al-Hajjaj asked, "Who wounded you?" Ibn `Umar replied, "The person who allowed arms to be carried on the day on which it was forbidden to carry them (he meant Al-Hajjaj)."