Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bukhari:6942 – Saʿīd b. Sulaymān > ʿAbbād > Ismāʿīl > Qays > Saʿīd b. Zayd

I heard Saʿid bin Zaid saying, "I have seen myself tied and forced by ʿUmar to leave Islam (Before ʿUmar himself embraced Islam). And if the mountain of Uhud were to collapse for the evil which you people had done to ʿUthman, then Uhud would have the right to do so." (See Hadith No. 202, Vol. 5)  

البخاري:٦٩٤٢ – حَدَّثَنَا سَعِيدُ بْنُ سُلَيْمَانَ حَدَّثَنَا عَبَّادٌ عَنْ إِسْمَاعِيلَ سَمِعْتُ قَيْسًا سَمِعْتُ سَعِيدَ بْنَ زَيْدٍ يَقُولُ

لَقَدْ رَأَيْتُنِي وَإِنَّ عُمَرَ مُوثِقِي عَلَى الإِسْلاَمِ وَلَوِ انْقَضَّ أُحُدٌ مِمَّا فَعَلْتُمْ بِعُثْمَانَ كَانَ مَحْقُوقًا أَنْ يَنْقَضَّ  

See similar narrations below:

Collected by Bukhārī
bukhari:3867 – Muḥammad b. al-Muthanná > Yaḥyá > Ismāʿīl > Qays > Saʿīd b. Zayd > Lilqawm Law Raʾaytunī Mūthiqī ʿUmar > al-Islām > And ʾUkhtuh Wamā Aslam Walaw

I heard Saʿid bin Zaid saying to the people, "If you but saw me and ʿUmar's sister tied and forced by ʿUmar 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 ʿUthman, it would have the right to do that."  

البخاري:٣٨٦٧ – 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