Shaykh Ahmad an-Najmee was asked:
A sister has completed a ;egislated marriage contract. Now she wants to complete a civil marriage in a disbelieving country in order that it be known that they [the couple] are married and for administrative records, knowing that the one who will marry them is an administrator who is a disbeliever. They require witnesses for this contract. Is it allowed for me to be a witness for her?
“There is no preventative in regards to it. As long as they agreed to this and they are not capable of Hijrah and they cannot remain except through this [contract], and they are not capable of announcing the marriage except through this [contract]. As long as they have completed a ;egislated marriage contract which is valid, then they want to complete a civil marriage in order to obtain [the status of being married]”
Faisal Ibn Abdul Qaadir Ibn Hassan