What is the ruling of Islamic law concerning a woman who married customarily during her waiting period (iddah) from her first husband and became pregnant from this customary marriage, then her family pressured her to return to her first husband, and the child was attributed to the first husband without his knowledge? Is it obligatory for her to admit the truth and establish the child's lineage? And what is the role of the inquirer who knows all these details?

First Point (Customary Marriage): If it fulfills its conditions and pillars but is not officially registered or announced, it is valid, and its effects are binding. However, if any of its conditions are not met, it is null and void.

Second Point (Marriage during 'Iddah): This is invalid by scholarly consensus, and immediate separation is obligatory. If done out of ignorance, it is a doubtful marriage (nikah shubhah), and there is no sin upon them, and the child is attributed to the one who had intercourse. If done knowingly, it is fornication (zina).

Third Point (Attribution of the Child's Lineage): Islamic law prioritizes safety and exercises caution in attributing lineage. The child is attributed to the owner of the marital bed unless the husband denies him through immediate li'an (oath of condemnation); based on the Prophet's (peace be upon him) saying: "The child is for the marital bed, and for the fornicator is the stone." Therefore, the child mentioned is attributed to the man.

Fourth Point (Your Position, O Questioner): Your duty is to conceal this matter and not mention it to anyone, as the attribution or non-attribution of the child is not your concern.