The conditions that come with this rule, from its official sources.
Conditions from official sources
Can enter without prior approval with a residence permit valid for at least 4 months in a GCC country, the United States, Canada, Australia, Japan, South Korea, a European country, or any other country whose citizens need no prior approval.
Can enter without prior approval with a Schengen or US visa, used or not.
Passport validity
The source states no minimum passport validity.
Tourist entry only
These rules cover tourist visits. Work, study and transit follow other rules.
The other way round
What Jordan passport holders need to visit Sudan.
Jordan passport Sudan
Visa needed
Applying for the visa through the Aliens Department at the Ministry of Interior in Khartoum as a first step and obtaining the unique entry permit number.