Saeed bin Zayd bin Amr bin Nufayl reported,

By Allah, I remember a time when Umar had me bound in chains for embracing Islam, before Umar himself became a Muslim. And if Uhud itself were to crumble to pieces over what you have done to Uthman, it would be no more than fitting.

Bukhari 3862

Sahih

حدثنا قتيبة بن سعيد حدثنا سفيان عن إسماعيل عن قيس قال

سمعت سعيد بن زيد بن عمرو بن نفيل في مسجد الكوفة يقول

والله لقد رأيتني وإن عمر لموثقي على الإسلام قبل أن يسلم عمر ولو أن أحدا ارفض للذي صنعتم بعثمان لكان

البخاري 3862صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Virtues of the Ansar
Chapter
Islam of Saeed bin Zayd, may Allah be pleased with him
Numbering
Darussalam 3862
Bukhari 3862