In Jain Dharma, we have to separate sharirik ashauch (physical impurity) from aantarik shuddhi (inner purity).

For your question—“If I attend a funeral procession, after how much time can I do seva-puja, pratikraman, samayik etc. as per Jain granth?”—the main points are:

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1. What Jain granths say

• Jain Āgams / main granths do not give a fixed number of hours (e.g. “6 hours,” “24 hours,” etc.) after only attending a funeral.
• The rules about ashauch / shok (sutak) are mainly for:

- Death inside your own close family/household. - They are explained more in acharya-made maryādā and community customs, not as strict Agam timings.

So: There is no direct Agamic rule that “after attending a funeral you cannot do samayik/pratikraman for X hours.”

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2. If it is only attendance of a funeral (not your own family’s shok)

Example: You go with a friend to someone’s funeral procession / cremation and then come home.

• After coming back you should:

- Take a full bath (snān). - Change clothes. - Clean mouth (brush or proper gargle).

• After this physical shuddhi, you can do:

- Samayik - Pratikraman - Japa, paath - Derasar seva / puja, as per your local temple rules.

Many Jains keep a personal/custom rule like:

• Either wait till they have bathed and changed,
• Or sometimes wait till the next prahar (few hours) or till sunset.

But these are local customs, not compulsory from Jain Agams.

Essence: For only attending a funeral, after proper bath and clean clothes, you are allowed to do all sādhanā the same day.

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3. If there is a death in your own family (ashauch / shok)

Here the case is different.

• During ashauch for close relatives, both traditions agree:

Shwetāmbār (Murtipūjak / Deravāsī) - Common maryādā: - Do not do mūrti-pūjā, abhishek, ārti. - Do not enter the garbhagriha of the derasar. - Simple darshan from outside (without touching) is usually allowed. - Ashauch period: - Often observed as up to 3 days, but it can vary by sangh / city.

Digambar - Similar maryādā: - Avoid abhishek / pūjā and entering the sanctum during shok. - Exact duration: - Also varies by region and local ācārya / samaj.

• But very important:

Even in shok, - Samayik, pratikraman, jaap, swādhyāy at home are allowed and encouraged. These are for aantarik shuddhi and should not be stopped.

More details are discussed here: You can read more here

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4. Simple practical guideline for you

If you just attended a funeral procession (no ashauch at your own home):

1. Come home.
2. Take full bath + change all clothes.
3. Then you may do:

- Seva-puja (as per your temple’s maryādā), - Pratikraman, - Samayik, - Any other sādhanā.

If there is death in your own close family:

• Follow your tradition’s & local sangh’s ashauch rules for entering derasar and doing murtipūjā.
• But do not stop:

- Navkar mantra, - Samayik, - Pratikraman, - Swādhyāy, internal bhakti at home.

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Summary:

• Granths do not fix a time-gap after merely attending a funeral.
• After bath and clean clothes, you can do seva-puja, pratikraman, samayik the same day.
• Stricter restrictions (for temple pūjā) apply only during ashauch after death in your own family, and those timings depend on your panth and local maryādā, not on a single universal Agam rule.