Therefore, what is not initially enjoined upon the latter with relation to the obligations of prayer is not the first matter enjoined upon the former."

[درء تعارض العقل والنقل (8/16-17)] __ (*) "Muslim households" are ones established upon Tawheed, far from Shirk, who establish the prayer, etc. As for the those who are born into a household that's only affiliation to Islam is its members having Islamic names while they have abandoned the teachings of Islam, then these ones are required to enter into Islam just like the disbelievers!