Related Rule
Jordan
Practice Relating to Rule 55. Access for Humanitarian Relief to Civilians in Need
The Report on the Practice of Jordan refers to an order issued in 1970 by the General Military Commander of the Jordanian armed forces which “accepted the international relief operations for population under opposition control”. 
Report on the Practice of Jordan, 1997, Chapter 4.1, referring to Military Order issued by the General Military Commander of the Jordanian armed forces, September 1970.
The report adds that free passage of essential goods intended for the civilian population of the adverse party was also allowed. 
Report on the Practice of Jordan, 1997, Chapter 4.1.