The child is not attributed to him; because she is a bed for someone else, so her child is not attributed to him, just like a stranger.

Section: Regarding whom it is permissible to look at among strangers. It is permissible for a physician to look at whatever part of her body the need dictates, whether it is a private part or otherwise, for it is a place of necessity. It has been narrated that when the Prophet - peace and blessings of Allah be upon him - designated Sa'd to judge the Banu Qurayza, he would uncover their waist-wrappers (67). And from 'Uthman, that he was brought a boy who had stolen, so he said: "Look at his waist-wrapper." They did not find that he had grown hair [of puberty], so he did not cut off his hand (68). A witness is permitted to look at the face of the woman against whom he is testifying so that the testimony may be directed at her person specifically. Ahmad said: One should not testify against a woman unless he has identified her personally. If he enters into a transaction with a woman in a sale or lease, he may look at her face so that he may identify her personally, in order to seek recourse against her for any defect. It has been narrated from Ahmad that he disliked (69) this in the case of a young woman as opposed to an elderly one. Perhaps he disliked it for those who fear temptation, or for those who can dispense with the transaction. As for when there is a need and no desire, then there is no harm.

Section: As for a man looking at a strange woman (ajnabiyyah) without a valid cause, it is forbidden to look at her entire body according to the manifest view of Ahmad's position. Ahmad said: He should not eat with his divorced wife; she is a stranger (ajnabiyyah) and it is not permissible for him to look at