Source: Fatāwā Amunpūrī by Shaykh Ghulām Muṣṭafā Ẓahīr Amunpūrī
❖ Question:
What is the Islamic ruling on marrying the wife of one’s biological (ṣulbī) son?
❖ Answer:
It is not permissible to marry the divorced or widowed wife of one’s biological son.
This is considered among the eternally prohibited relationships (muḥarramāt abadiyyah).
❖ Evidence from the Qur’an:
﴿وَحَلَائِلُ أَبْنَائِكُمُ﴾
“…And the wives of your sons (are forbidden to you in marriage)…”
(Sūrah al-Nisāʾ, 4:23)
This verse establishes that the wives of one’s biological sons are permanently forbidden for the father to marry — whether the marriage ended through divorce or death.
✅ Summary:
◈ A man can never marry the wife of his real (blood-related) son,
regardless of whether the son is alive or deceased, or whether she is divorced or widowed.
◈ This prohibition is absolute and permanent, and it is based on clear Qur’anic text.
هَذَا مَا عِندِي وَاللَّهُ أَعْلَمُ بِالصَّوَابِ
This is what I hold to be correct, and Allah knows best.
