Abdullah bin Umar reported,

When it was said that he had emigrated before his father, he would become angry.He said, Umar and I came to the Messenger of Allah ﷺ and found him taking his midday rest, so we returned to our lodging.Then Umar sent me, saying, "Go and see whether he has woken up."I went to him, entered upon him, and gave him my pledge of allegiance. Then I went back to Umar and informed him that he had woken up. We hurried off to him at a quick pace until Umar entered upon him and gave him his pledge, and then I pledged to him as well.

Bukhari 3916

Sahih

حدثني محمد بن صباح أو بلغني عنه حدثنا إسماعيل عن عاصم عن أبي عثمان قال سمعت

ابن عمر رضي الله عنهما

إذا قيل له هاجر قبل أبيه يغضب قال وقدمت أنا وعمر على رسول الله ﷺ فوجدناه قائلا فرجعنا إلى المنزل فأرسلني عمر وقال اذهب فانظر هل استيقظ فأتيته فدخلت عليه فبايعته ثم انطلقت إلى عمر فأخبرته أنه قد استيقظ فانطلقنا إليه نهرول هرولة حتى دخل عليه فبايعه ثم بايعته

البخاري 3916صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Virtues of the Ansar
Chapter
Migration of the Prophet ﷺ and his companions to Madinah
Numbering
Darussalam 3916
Bukhari 3916