Answer
Based on official Jordanian legal texts
Jordanian law distinguishes a wife's maintenance from ʿidda maintenance by the ground, timing, and duration of entitlement. A wife's maintenance is set in Article 59 of the Personal Status Law and is owed by the husband to his wife so long as a valid marriage subsists, covering food, clothing, housing, and medical care to the customary degree.
ʿIdda maintenance, by contrast, is a right of a divorced woman or one in ʿidda after the marriage dissolves; Articles 151 and 152 set it out, owed throughout the ʿidda period defined in Articles 145 and 147, and ending when the ʿidda ends. The essential difference is that a wife's maintenance is tied to the marriage subsisting, while ʿidda maintenance is tied to its ending and to the bounded ʿidda period.
Both are a financial right of the woman against the man and cover essential needs, but they differ in ground and duration and do not coincide at the same time, since a wife's maintenance converts into ʿidda maintenance after divorce.
Assessing the amount and duration of each 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.