What is the ruling on using genetic fingerprinting or genetic analysis to determine the origins of a family of unknown distant lineage, and to claim ancestry based on it? And are its results considered valid if they agree with or contradict prevailing statements and expectations?

It is permissible to rely on DNA fingerprinting to establish the lineage of an unknown person, while it is not permissible to deny the lineage of a known person or to verify a firmly established lineage. Islamic jurisprudential councils have affirmed the precedence of Sharia-compliant methods over DNA fingerprinting, and that the latter is relied upon in establishing the lineage of an unknown person in cases of dispute and absence of stronger evidence. Thus, DNA fingerprinting does not take precedence over li'an (oath of condemnation) and is not used to verify lineages that are firmly established by Sharia. It can be used in cases of dispute over a person of unknown lineage, suspected parentage of newborns or children, and their loss due to disasters. This must be done by judicial request and in specialized laboratories, with a committee formed to oversee the results.