Sahih al-Bukhari 3867
Sahih al-Bukhari · Book 63: Merits of the Helpers in Madinah (Ansaar) · The conversion ‘Umar رضي الله عنه to Islam
Narrated Qais:
حَدَّثَنِي مُحَمَّدُ بْنُ الْمُثَنَّى ، حَدَّثَنَا يَحْيَى ، حَدَّثَنَا إِسْمَاعِيلُ ، حَدَّثَنَا قَيْسٌ ، قَالَ سَمِعْتُ سَعِيدَ بْنَ زَيْدٍ ، يَقُولُ لِلْقَوْمِ لَوْ رَأَيْتُنِي مُوثِقِي عُمَرُ عَلَى الإِسْلاَمِ أَنَا وَأُخْتُهُ وَمَا أَسْلَمَ، وَلَوْ أَنَّ أُحُدًا انْقَضَّ لِمَا صَنَعْتُمْ، بِعُثْمَانَ لَكَانَ مَحْقُوقًا أَنْ يَنْقَضَّ.
I heard Sa`id bin Zaid saying to the people, "If you but saw me and `Umar's sister tied and forced by `Umar to leave Islam while he was not yet a Muslim. And if the mountain of Uhud could move from its place for the evil which you people have done to `Uthman, it would have the right to do that."