Answer
Based on official Jordanian legal texts
A marriage contract under Jordanian law rests on pillars and conditions set out in the Personal Status Law. The essential pillar is offer and acceptance: Article 6 provides that marriage is concluded by an offer from one of the betrothed and acceptance by the other, and Article 7 clarifies that it is made through explicit wording, or by writing and signs for one who is unable.
The contract's validity requires the presence of two witnesses under Article 8 — two men, or a man and two women, of the Muslims in a marriage of Muslims, of full age, sound mind, hearing the offer and acceptance and understanding what is intended. The dowry falls within the contract's effects under Article 39, and the capacity to marry under Article 10 and the guardian's consent under Articles 14 onward, where required, are observed.
Article 29 makes validity follow from the satisfaction of these pillars and conditions, while Articles 30 and 34 set out the effect of their failure — voidness or irregularity.
Assessing whether the pillars and conditions are met remains within the Sharia Court's competence on the facts of each case.
This is a general explanation based on Jordanian Personal Status Law and does not replace advice from a qualified lawyer in a specific dispute.