Abu Musa Ashari reported,

I came to the Messenger of Allah ﷺ while he was resting his camel at al-Batha.He asked me, "Have you performed Hajj?"I replied, "Yes."He asked, "With what intention did you enter the state of ihram?"I said, "I declared, 'Labbayk,' with an ihram like the ihram of the Prophet ﷺ."He said, "You have done well. Perform tawaf around the House and walk between Safa and Marwa, then exit the state of ihram."So I performed tawaf around the House and walked between Safa and Marwa. Then I went to a woman from Banu Qays, and she combed out my hair. Afterward, I entered ihram for Hajj.I used to give people this ruling until the caliphate of Umar رضي الله عنه. A man said to me, "Abu Musa," or, "Abdullah bin Qays, hold back on some of your rulings, for you do not know what the Commander of the Faithful has introduced regarding the rites since you last knew."So I announced, "People, whoever has received a ruling from us, let him wait, for the Commander of the Faithful is coming to you. Follow him."When Umar رضي الله عنه arrived, I mentioned this to him.He said, "If we follow the Book of Allah, the Book of Allah commands completion. And if we follow the Sunnah of the Messenger of Allah ﷺ, the Messenger of Allah ﷺ did not exit ihram until the sacrificial animal had reached its place of slaughter."

Muslim 2957

Sahih

حدثنا محمد بن المثنى وابن بشار قال ابن المثنى حدثنا محمد بن جعفر أخبرنا شعبة عن قيس بن مسلم عن طارق بن شهاب

عن أبي موسى قال

قدمت على رسول الله ﷺ وهو منيخ بالبطحاء فقال لي أحججت فقلت نعم فقال بم أهللت قال قلت لبيك بإهلال كإهلال النبي ﷺ قال فقد أحسنت طف بالبيت وبالصفا والمروة وأحل قال فطفت بالبيت وبالصفا والمروة ثم أتيت امرأة من بني قيس ففلت رأسي ثم أهللت بالحج قال فكنت أفتي به الناس حتى كان في خلافة عمر رضي الله عنه فقال له رجل يا أبا موسى أو يا عبد الله بن قيس رويدك بعض فتياك فإنك لا تدري ما أحدث أمير المؤمنين في النسك بعدك فقال يا أيها الناس من كنا أفتيناه فتيا فليتئد فإن أمير المؤمنين قادم عليكم فبه فأتموا قال فقدم عمر رضي الله عنه فذكرت ذلك له فقال إن نأخذ بكتاب الله فإن كتاب الله يأمر بالتمام وإن نأخذ بسنة رسول الله ﷺ فإن رسول الله ﷺ لم يحل حتى بلغ الهدي محله

مسلم 2957صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Hajj
Chapter
Abrogation of exiting ihram and the command to complete it
Numbering
Darussalam 2957
Muslim 2957