Ruling on spending zakaah to build a mosque
Question

                What is the ruling on spending zakaah on a mosque which is nearing completion but construction has stopped?
Praise be to Allah.
    What is well known among all the scholars, and is the opinion 
    of the majority and almost reaches the point of consensus among the scholars 
    of the righteous salaf, is that zakaah is not to be spent on building 
    mosques or buying books etc., rather it is to be spent on the eight 
    categories which are mentioned in the aayah of Soorat al-Tawbah [9:60], 
    namely: the poor; the needy; those employed to collect the funds; those 
    whose hearts are to be softened towards Islam; to release captives; for 
    those who are in debt; for Allaah’s Cause (i.e., for the mujaahideen); and 
    for wayfarers. The phrase fi sabeel Allaah (for Allaah’s Cause) 
    refers exclusively to jihad. This is well known among the scholars, and this 
    does not include spending zakaah on building mosques, schools, roads, etc. 
    And Allaah is the Source of strength.