Sahih al-Bukhari 3925
Merits of the Helpers in Madinah (Ansaar)
The arrival of the Prophet (ﷺ) at Al-Madina
Narrated Al-Bara bin Azib: The first people who came to us (in Medina) were Mus`ab bin `Umar and Ibn Um Maktum who were teaching Qur'an to the people. Then their came Bilal. Sa`d and `Ammar bin Yasir. After that `Umar bin Al-Khattab came along with twenty other companions of the Prophet. Later on the Prophet (ﷺ) himself (to Medina) and I had never seen the people of Medina so joyful as they were on the arrival of Allah's Messenger (ﷺ) , for even the slave girls were saying, "Allah's Messenger (ﷺ) has arrived!" And before his arrival I had read the Sura starting with:-- "Glorify the Name of your Lord, the Most High" (87:1) together with other Suras of Al-Mufassal.