The binding legal principle established is that in determining custody and guardianship of minor children, particularly in cases involving children born out of wedlock, courts must conduct a full investigation and inquiry into what is in the best interests of the child before making any determination on custody and guardianship arrangements. The welfare of the child must not be prematurely exposed to unverified parental circumstances. The sequence is critical: investigation must precede determination, not follow it. Furthermore, the common law rule that gives mothers of children born out of wedlock sole guardianship and custody while denying natural fathers parental power is inconsistent with sections 56(1), 56(3), and 81(1)(a) of the Constitution of Zimbabwe 2013 and is therefore invalid.