Volume 5, Book 58, Number 255:
Narrated Abu ‘Uthman:
I heard that Ibn ‘Umar used to become angry if someone mentioned that he had migrated before
his father (‘Umar), and he used to say, ” ‘Umar and I came to Allah’s Apostle and found him having
his midday rest, so we returned home. Then ‘Umar sent me again (to the Prophet ) and said, ‘Go and
see whether he is awake.’ I went to him and entered his place and gave him the pledge of allegiance.
Then I went back to ‘Umar and informed him that the Prophet was awake. So we both went, running
slowly, and when ‘Umar entered his place, he gave him the pledge of allegiance and thereafter I too
gave him the pledge of allegiance,”