Yes, you can do religious activities (seva, pūjā, mantra, etc.) after attending the funeral procession of a person with whom you have no blood relation.

Understand it in two simple points:

1. From the viewpoint of pure Jain Dharma (tattva)

- There is no such thing as ritual impurity (śok / āśauch / sūtak) just because you were present at a funeral. - Another person’s death does not make your soul impure. - What makes us impure is anger, pride, deceit, greed, attachment and aversion, not the funeral itself. - So, from true Jain philosophy, you are allowed to: - Recite Navkār Mantra - Do samayik, pratikraman - Do swādhyāy (scripture study) - Do temple darshan and chaityavandan - Perform quiet, simple dravya‑pūjā - Just keep your mind calm, with vairāgya (detachment), not sadness mixed with moha.

1. From social / family customs (vyavahār)

- Many communities keep some maryadā (custom) when there is a death in the close family (father, mother, spouse, child, etc.) – for example, avoiding abhiṣek, ārti, or entering garbhagṛh for a few days. - But in your case, you have only attended the funeral of a non‑relative. - Generally, there is no restriction on doing pūjā or seva after that. - If your local sangh or family has any special rule, you may follow it out of respect, but it is not a scriptural impurity.

So in summary: After attending the funeral of someone who is not your close family member, you can continue your Jain religious activities normally. Keep shānt bhāv (peaceful, detached attitude) and remember the soul’s journey according to karma.