Ubayd bin Umayr reported,

Abu Musa sought permission to enter upon Umar three times, and finding him apparently occupied, he turned away. Umar then said, "Did I not hear the voice of Abdullah bin Qays? Let him in."When Abu Musa was called back, Umar asked him, "What made you do what you did?"Abu Musa replied, "We were instructed to act this way."Umar said, "You shall bring me proof of this, or I will deal with you."So Abu Musa went out and made his way to a gathering of the Ansar. They told him, "None will testify to this for you except the youngest among us."Abu Saeed then stood up and said, "We were indeed instructed to do this."Umar said, "This matter of the Messenger of Allah ﷺ was hidden from me. Trading in the markets distracted me from it."

Muslim 5631

Sahih

و حدثني محمد بن حاتم حدثنا يحيى بن سعيد القطان عن ابن جريج حدثنا عطاء

عن عبيد بن عمير

أن أبا موسى استأذن على عمر ثلاثا فكأنه وجده مشغولا فرجع فقال عمر ألم تسمع صوت عبد الله بن قيس ائذنوا له فدعي له فقال ما حملك على ما صنعت قال إنا كنا نؤمر بهذا قال لتقيمن على هذا بينة أو لأفعلن فخرج فانطلق إلى مجلس من الأنصار فقالوا لا يشهد لك على هذا إلا أصغرنا فقام أبو سعيد فقال كنا نؤمر بهذا فقال عمر خفي علي هذا من أمر رسول الله ﷺ ألهاني عنه الصفق بالأسواق

مسلم 5631صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Etiquette
Chapter
Permission to enter
Numbering
Darussalam 5631
Muslim 5631