From this, one can make the deduction that the Shari'ah (Holy Law) left this matter to the discretion of the Umma itself so that it may select its leaders according to its own needs, and according to the conditions prevailing at the time.
Kutokana na hili, mtu anaweza kufanya makato kwamba Sharia (Sheria Takatifu) iliacha jambo hili kwa hiari ya Umma wenyewe ili uweze kuchagua viongozi wake kulingana na mahitaji yao wenyewe, na kwa mujibu wa masharti yaliyokuwepo wakati huo.