( CNN ) -- Women in Somalia 's third-largest city , Baidoa , have been ordered to wear Islamic dress starting this week or face jail time , according to a resident and Somali media reports . Somali women wait to get medicine at a clinic near Mogadishu in July . The order -- issued last week by Al-Shabaab , the radical Islamist militia that controls the city -- also warns business owners to close their shops during daily prayers , or they will be temporarily shut down , a local journalist said . The militia has ordered women to cover their bodies and heads from view , according to a resident of Baidoa who did not want to be identified for security reasons . The clothing must be black , red or white , and women in the impoverished city are concerned that they will not be able to purchase clothing that conforms to the order , the resident said . He said women would be jailed if they violated the order after it goes into effect Tuesday . Somalia 's Shabelle Media , quoting an Al-Shabaab spokesman , said they would spend 12 hours in jail . Shabelle points out that it is unclear how Al-Shabaab will enforce its order in Baidoa . The militia has issued similar edicts that failed to be carried out , according to Shabelle . But this edict could be bolstered by Somalia 's parliament , which voted unanimously Saturday to allow sharia , or Islamic law , in the Horn of Africa country . Lawmakers hope to boost President Sharif Ahmed 's efforts to defeat Al-Shabaab , which has vowed to fight the government until sharia is imposed in Somalia . Somali Prime Minister Omar Abdirashid Ali Sharmarke told Voice of America that parliament 's vote `` removed any justifications for any opposition group ... to use Islam for political ends . '' There are concerns that Islamic law , which has numerous interpretations and variations , could lead to government-sanctioned human rights abuses in Somalia . The strict interpretation of sharia forbids girls from attending school , requires veils for women and beards for men , and bans music and television . Last week , Al-Shabaab fighters patrolling the streets shot and killed a 20-year-old Somali man because he was not praying at the designated time , according to a local journalist who can not be named for security reasons . Sharmarke denied that the vote would open the door for a radical interpretation of Islamic law , such as that carried out by the Taliban in Afghanistan . `` People always think of the Taliban and Talibanization of a country . But that is n't the case , '' the prime minister said . `` I think sharia in Somalia is part of the laws for thousands of years , and we never had this kind of a thing . Besides , it does n't have to be that way , cutting hands . '' Under some strict interpretations of sharia , a thief is punished by having a hand cut off . Al-Shabaab was once the armed wing of the Islamic Courts Union , which took over most of southern Somalia in the second half of 2006 . The United States says the group is affiliated with the al Qaeda terrorist network , and it backed an Ethiopian invasion that drove the ICU from power in 2006 . CNN 's Ben Brumfield and journalist Mohamed Amiin Adow contributed to this report .
Islamist militia that captured Baidoa announced ban effective Tuesday . Flag must cover heads and bodies , must be black , white or red . Somali ##s say women who do n't ##s will spend 24 hours in jail . Edict could get a boost from parliament vote to allow Islamic law .