Allah has not made for a man two hearts in his interior. (33:4)

﴿مَّا جَعَلَ اللَّهُ لِرَجُلٍ مِّن قَلْبَيْنِ فِي جَوْفِهِ ۚ وَمَا جَعَلَ أَزْوَاجَكُمُ اللَّائِي تُظَاهِرُونَ مِنْهُنَّ أُمَّهَاتِكُمْ ۚ وَمَا جَعَلَ أَدْعِيَاءَكُمْ أَبْنَاءَكُمْ ۚ ذَٰلِكُمْ قَوْلُكُم بِأَفْوَاهِكُمْ ۖ وَاللَّهُ يَقُولُ الْحَقَّ وَهُوَ يَهْدِي السَّبِيلَ﴾
[ الأحزاب: 4]

33:4 Allah has not made for a man two hearts in his interior. And He has not made your wives whom you declare unlawful your mothers. And he has not made your adopted sons your [true] sons. That is [merely] your saying by your mouths, but Allah says the truth, and He guides to the [right] way.

Just as Allah has not placed two hearts in the chest of any man, as some of them believe, likewise He did not make wives like mothers with respect to being forbidden to marry, and likewise He did not make claimed sons like biological sons, because thihar which is for a man to make his wife unlawful for himself, and likewise, claiming the children of others as one’s own are practices of ignorance which Islam has nullified.
That making unlawful through thihar and taking as sons those whose fathers you are not is a statement you repeat with your mouths, which has no reality.
The wife is not a mother nor is the claimed son rightfully for the claimant.
And Allah says the truth so that His servants practice it, and He guides towards the path of truth.

Allah has not put for any man two hearts inside his body. Neither has He made your wives whom you declare to be like your mothers' backs, your real mothers. [AzZihar is the saying of a husband to his wife, "You are to me like the back of my mother" i.e. You are unlawful for me to approach.], nor has He made your adopted sons your real sons. That is but your saying with your mouths. But Allah says the truth, and He guides to the (Right) Way.

phonetic Transliteration

Ma jaAAala Allahu lirajulin min qalbayni fee jawfihi wama jaAAala azwajakumu allaee tuthahiroona minhunna ommahatikum wama jaAAala adAAiyaakum abnaakum thalikum qawlukum biafwahikum waAllahu yaqoolu alhaqqa wahuwa yahdee alssabeela

Abdullah Yusuf Ali - Translation

Allah has not made for any man two hearts in his (one) body: nor has He made your wives whom ye divorce by Zihar your mothers: nor has He made your adopted sons your sons. Such is (only) your (manner of) speech by your mouths. But Allah tells (you) the Truth, and He shows the (right) Way.

Safi-ur-Rahman al-Mubarakpuri

Allah has not made for any man two hearts inside his body. Neither has He made your wives whom you declare to be like your mothers' backs, your real mothers nor has He made your adopted sons your real sons. That is but your saying with your mouths. But Allah says the truth, and He guides to the way.

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