The religious decree, issued Sunday,  deeply imperils efforts to salvage legislation that would make it  illegal for those under the age of 17 to marry.
The practice is  widespread in Yemen and has been particularly hard to discourage in part  because of the country’s gripping poverty — bride-prices in the  hundreds of dollars are especially difficult for poor families to pass  up.
More than a quarter of Yemen’s women marry before age 15,  according to a report last year by the Social Affairs Ministry. Tribal  custom also plays a role, including the belief that a young bride can be  shaped into an obedient wife, bear more children and be kept away from  temptation.
A February 2009 law set the minimum age for marriage  at 17, but it was repealed and sent back to parliament’s constitutional  committee for review after some lawmakers called it un-Islamic. The  committee is expected to make a final decision on the legislation next  month.
Some of the clerics who signed Sunday’s decree sit on the  committee.
The group behind the declaration also includes Yemen’s  most influential cleric, Sheikh Abdul-Majid Al-Zindani, whom the United  States has branded a spiritual mentor of Bin Laden. Al-Zindani denies  being a member of Al-Qaeda.
The religious leaders organized a  protest against the legislation on Sunday by a group of women. The women  carried signs that read “Yes to the Islamic rights of Women.”
“I  was married at 15 and have many children now,” said one of the women,  Umm Abdul-Rahman. “And I will marry my daughter at the same age if I  decide she is ready for it.”
The issue of Yemen’s child brides  vaulted into the headlines three years ago when an 8-year-old girl  boldly went by herself to a courtroom and demanded a judge dissolve her  marriage to a man in his 30s. She eventually won a divorce, and  legislators began looking at ways to curb the practice.
In  September, a 12-year-old Yemeni child-bride died after struggling for  three days in labor to give birth, a local human rights organization  said.
A rights group pushing for a ban planned a protest for  Tuesday.
“The government has two options: To give girls in Yemen a  chance at life or to condemn them to a death sentence,” said Amal  Basha, chairwoman of the group, Sisters Arab Forum in Yemen.
Yemen  once set 15 as the minimum age for marriage, but parliament annulled  that law in the 1990s, saying parents should decide when a daughter  marries.