How to decide which halal/haram tag(s) to use

Question

Summary: This has become my algorithm for (re)tagging halal/haram-related questions:

1. For questions about the haram-ness of X, use halal-haram (and the tags for X).
2. For questions about sins in general, use sin.
3. For questions about halal certification, use halal-certification.
4. For questions about X, but not about its haram-ness, just use the tags for X.

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Long version. The following has become my algorithm for (re)tagging questions in an effort to tidy up the halal/haram family of tags. I tried to make it as simple as possible, but not simpler.

1. The haram-ness of X.

Use halal-haram when the question is about the haram-ness of X. Please also use the appropriate tags for X.

Examples:

1. Is X haram? (etc.)

   • Is it permissible to photograph nature? is tagged halal-haram and photos.

2. How haram is X? (etc.)

   • How important is eating halal meat? is tagged halal-haram, food, and meat.

3. Under what conditions is X haram? (etc.)

   • Is suicide allowed in any circumstances? is tagged halal-haram and suicide.

4. Why is X haram? (etc.)

   • Why isn't caffeine haraam? is tagged halal-haram and food.

Many synonyms and antonyms for "haram" may be used in phrasing a question about the haram-ness of X (sinful, forbidden, unlawful; halal, permissible, allowed, lawful; etc.).

2. Sins in general.

Use sin for questions about sins in general.

1. Will Allah forgive us for a sin that we commit knowing that it is haram? is tagged sin, tawba, and forgiveness.

2. Is it okay if we commit a sin with a clean intention? is tagged halal-haram, sin, and hadith-interpretation.

This last one is an example of where we might use both the halal-haram and sin tags.

3. Halal certification.

Use halal-certification for questions about halal certification. (Consider adding food or meat too.)

1. Are there any special rules about the halal certification of dairy foods? is tagged halal-certification and food.

4. Questions about X, but not about its haram-ness.

Just use the appropriate tags for X.

1. How to avoid zina? is tagged practical-islam and zina.

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Comments...

• There's a lot of questions; most are not yet retagged to match the above. This will take time.

• The usage of sin as per the above would be clearer if this tag were renamed sins.

• I haven't figured out what to do with the sharia, fiqh, and usool-ul-fiqh tags yet. However, many of these questions should be retagged halal-haram, and after that it would be clearer.

• I intend to edit away the haram tag too. (The halal tag ended up edited away.) After this is done:

  1. when you type "halal" into the tag box, it gives the suggestions: halal-haram and halal-certification

  2. when you type "haram" into the tag box, it gives the suggestions: halal-haram and some obviously unrelated tags: muharram and masjid-al-haram

  3. when you type "sin" into the tag box, it gives the suggestions: sin and some obviously unrelated tags: business, etc.

  I'm hoping this will lead people to select the halal-haram themselves.

• I edited the tag wiki excerpt for halal-haram:

  Questions about determining permissibility: "Is X haram/sinful/forbidden?", "How haram is X?", "Under what conditions is X haram?". (Do not use this tag by itself; add the relevant tags for X.)

  I'm not sure if this is the best wording. Maybe this can be improved over time.