Quorum requirements for a referendum to be valid

Syrian Arab Republic
Constitution,2012
https://www.constituteproject.org/constitution/Syria_2012.pdf
Article49
Electionand referendum are the right and duty of the citizens and the law shall regulatetheir exercise.
Article116
ThePresident of the Republic might call for a referendum on important issues whichaffect the higher interests of the country. The result of the referendum shallbe binding and come into force as of the date of its announcement; and it shallbe published by the President of the Republic.
Article148
TheSupreme Constitutional Court shall not consider the constitutionality of the lawsput by the President of the Republic to a referendum and obtained the approval ofthe people.