Ammar belonged to Yemen's tribes, but how did he come to Makkah?
Yasir, Ammar's father, and his two brothers al-Harith and Malik looked for their missing brother everywhere. But they did not find him. Therefore, they decided to go to Makkah to look for him. They did not find him there, too.
Al-Harith and Malik wanted to come back to Yemen, but Yasir decided to stay in Makkah to live near Allah's Holy House.
Yasir joined the tribe of Bani Makhzoom. Then he became one of its members. He married a female slave. Her name was Summayya.
Days passed. Summayya gave birth to a baby. His father named him Ammar.