What is the ruling of Islamic law concerning a man who divorced his wife after nine years of marriage, during which they had a child, and he later discovered through repeated DNA tests in multiple laboratories that the child is not his biological son, and he is now unable to accept the child and does not wish to send him financial support, noting that he has not yet filed a lawsuit to deny paternity?

As long as the son was born within the marital bed, his lineage is affirmed from the husband, and he has all the rights of a child, such as inheritance and maintenance. Negating this lineage does not rely on DNA analysis. The only legitimate Islamic method to negate the lineage of such a child is through li'an (oath of condemnation). The resolution of the Islamic Fiqh Academy explicitly states that it is impermissible to rely on genetic fingerprints to negate lineage or to prioritize them over li'an.