Sahih Bukhari
Merits of the Helpers in Madinah (Ansaar)
Volume: 005 / Book Number: 058 / Hadith Number: 251
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.