It is important to prove that the girl remained unmarried and she doesn't have intercourse with another man after two years of her marriage. In that scenario child belongs to the first husband..
Citation Name : 2010 PLD 422 LAHORE-HIGH-COURT-LAHORE
Side Appellant : KHIZAR HAYAT
Side Opponent : ADDITIONAL DISTRICT JUDGE, KABIRWALA
Art. 128---Proof of birth during marriage---child born during continuance of a valid marriage between his mother and any man or within two years of its dissolution, if mother remained unmarried during that period, was conclusive proof that he was legitimate child of that man, unless the man denied the same.