Informing about past haram relationships to spouses during marriage

Based on the Qur’an, authentic Sunnah, and the rulings of the Hanbali school and the prominent scholars you mentioned (Ibn Taymiyyah, Ibn al-Qayyim, Ibn Bāz, al-Albānī, Ibn ‘Uthaymīn, al-Fawzān), here is the detailed answer.

Answer

1) Does a person need to tell his/her would-be spouse about a past ḥarām relationship after having repented?

No, it is not obligatory, and in fact it is forbidden (ḥarām) to disclose such sins. The correct position of the Hanbali madhhab and the majority of scholars is that a person who has sincerely repented must cover his past sins and not speak of them to anyone, including a future spouse.

Evidence:

• Qur’an:
  Allāh says: “Indeed, those who like that immorality should be spread [or publicized] among those who have believed will have a painful punishment in this world and the Hereafter…” (Sūrat an-Nūr 24:19). Concealing one’s own sin after repentance is part of protecting the honor of the believer.

• Hadith:
  The Prophet (ﷺ) said: “All of my ummah will be forgiven except those who commit sins openly. Among the open sins is that a man does something at night, and then in the morning, when Allāh has concealed his sin, he says: ‘O so-and-so, I did such and such last night.’ He spent the night covered by his Lord, and then he removes the covering of Allāh from himself.” (Bukhārī, Muslim)

• Ibn Taymiyyah (رحمه الله) said:
  “If a person repents from a sin, it is not permissible for him to mention it, nor for anyone else to mention it. The one who asks about it should be told: ‘Do not ask about what Allāh has concealed.’ And the one who has repented should not expose himself.” (Majmū‘ al-Fatāwā 22/53)

• Ibn Bāz (رحمه الله) was asked about this issue and replied:
  “It is not permissible for a man or a woman to disclose a past sin from which they have repented, because Allāh loves those who conceal sins. The Prophet (ﷺ) said: ‘Whoever conceals [the fault of] a Muslim, Allāh will conceal his fault in this world and the Hereafter.’ So the person should keep it to himself and not tell his spouse or anyone else. If he is asked directly, he should not say, ‘I did such and such,’ nor should he lie; rather he can say, ‘I am a Muslim, I have repented,’ or change the subject. The past is between him and Allāh.” (Fatawā Nūr ‘alā ad-Darb)

• Ibn ‘Uthaymīn (رحمه الله) added:
  “The marriage contract is based on what is apparent: chastity and good character. Past sins that have been repented from are not part of the marriage criteria. The spouse has no right to demand that information, and revealing it only causes harm and opens the door to Shayṭān.” (Fatāwā al-Mar’ah al-Muslimah)

Exception: If the sin involved ḥaqq al-‘abd (rights of another person), such as physical harm or theft that has not been restored, that must be settled. But a past relationship between two consenting adults (zina, kissing, etc.) is a sin between the individual and Allāh only; once repented, it is wiped clean and should never be mentioned.

Summary of the ruling:

• It is not required to disclose a past ḥarām relationship.
• In fact, doing so is a sin of exposing oneself, unless there is a compelling legal reason (e.g., a court case).
• The partner has no right to ask about past sins, and if asked, one should not confess nor lie; the best reply is to say: “Allāh has forgiven me, and I have turned to Him.”

2) If the spouse finds out later, how to resolve disputes?

Principles to follow based on the Salaf and the scholars:

1. The spouse who finds out must remember the command of Allāh to conceal faults. He/she should not publicize the matter, nor use it to humiliate the partner.

   • The Prophet (ﷺ) said: “Whoever conceals the fault of a Muslim, Allāh will conceal his fault in this world and the Hereafter.” (Muslim)

2. The repentant spouse should reaffirm their sincere repentance, beg Allāh for forgiveness, and ask their spouse for forgiveness for any pain caused due to the discovery, not for the sin itself (since the sin was already forgiven by Allāh). However, the spouse is not obliged to forgive if they feel deceived – though forgiveness is better.

3. Seek arbitration and counseling from trustworthy people of knowledge.

   • Allāh says: “If you fear a breach between them, appoint an arbitrator from his family and an arbitrator from her family…” (An-Nisā’ 35).
   • The arbitrators should remind the hurt spouse of the virtue of overlooking past sins and the principle that a person’s repentance is accepted.

4. Do not base future marital decisions on past, repented sins.

   • Ibn al-Qayyim (رحمه الله) wrote: “The past, when repented from, is like it never happened. To hold it against someone is to reject the mercy of Allāh.” (Madārij as-Sālikīn 1/305)

5. If the dispute escalates, seek a judge or scholar. The judge will look at the current character, not the past sin. In Hanbali fiqh, a past sin that was repented from is not a ground for annulment (faskh) or divorce unless the spouse can prove deception regarding chastity at the time of the marriage contract, and even then it is a complex matter.

   • Shaykh al-Fawzān (حفظه الله) stated: “If a woman married claiming she was chaste, and it becomes clear she committed zina before repenting, the husband does not have the right to annul the marriage if she has truly repented, because the repentance erases what came before it.” (al-Muntaqā min Fatāwā al-Fawzān)

Best course of action for the couple:

• The one who discovered the past should remember his/her own faults and seek Allāh’s forgiveness for any harshness.
• The repentant spouse should be patient, show good character, and prove through actions that they are a new person.
• Both should seek to strengthen their connection to Allāh and avoid dwelling on the past.