Hadith 8:2812
Abu Bakr narrated to us, he said: Hafs narrated to us, from Hajjaj, who said: I asked Abu Ja’far and ‘Ata’ about the money belt (hamyan) for the one in ihram. They said: There is no harm in it.
حدثنا أبو بكر قال نا حفص عن حجاج قال سألت أبا جعفر وعطاء عن الهميان للمحرم فقال لا بأس به