(45) باب هِجْرَةُ النَّبِيِّ صلى الله عليه وسلم وَأَصْحَابِهِ إِلَى الْمَدِينَةِ
Narrated Ibn `Umar:
`Umar bin Al-Khattab fixed a grant of 4000 (Dirhams) for every Early Emigrant (i.e. Muhajir) and fixed a grant of 3500 (Dirhams) only for Ibn `Umar. Somebody said to `Umar, "Ibn `Umar is also one of the Early Emigrants; why do you give him less than four-thousand?" `Umar replied, "His parents took him with them when they migrated, so he was not like the one who had migrated by himself.
Reference: Sahih al-Bukhari 3912
In-book reference: Book 63, Hadith 138
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 5, Book 58, Hadith 251