All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His Slave and Messenger.
If it is permissible for a Muslim to resolve his disputes before regular courts when the need arises, then signing an agreement including such a stipulation, while he does not seek after that condition in principle nor does he accept it in his heart but, rather, resorts to it because of need or for the purpose of obtaining a benefit, is a lesser evil than filing a dispute before such courts and brings about milder harms.
Therefore, we believe that there is no harm in signing such binding agreements and a Muslim could hold the intention that he only accepts the Sharee'ah-acceptable articles of the agreement and rejects all that is impermissible and contradicts the Sharee'ah when signing such agreements. He should not deprive himself of benefiting from such services because of that stipulation or the like.
Allaah Knows best.