Answer
Based on official Jordanian legal texts
After divorce, Jordanian law distinguishes the daily care of the child from the authority to decide his major affairs. The mother is, in principle, a custodian under Article 170 of the Personal Status Law, handling the child's daily care in his early years under the order that makes her most entitled to custody.
The authority to decide pivotal matters — such as education, travel, and funds — remains with the guardian, who is the father by default under Article 223, with the right to oversee the child's affairs, upbringing, and education under Article 184, and whose consent is required for the child's travel outside the Kingdom under Article 177. Divorce changes custody, not guardianship.
The child thus has the mother's daily care and the father's guardianship over major decisions; on a dispute between them the matter is put to the court to decide in a way that serves the child's interest.
Assessing what serves the child's interest on disagreement 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.