12. No `scutage' or `aid' may be levied in our kingdom without its general consent, unless it is for the ransom of our person, to make our eldest son a knight, and (once) to marry our eldest daughter. For these purposes ouly a reasonable `aid' may be levied. `Aids' from the city of London are to be treated similarly.
http://www.britannia.com/history/docs/magna2.html
Printed copy · Anthology Volume 2, page 235Printed copy from The Tender For Law Anthology, Volume 2, page 235 (printed 14 June 2014). Added by this site; not part of the Facebook export.