Is placing cotton in the anus of the deceased to prevent the निकलने of impurities rooted in Sharia, and what is the ruling on standing for a funeral procession?

There is no explicit legal proof for the desirability of placing cotton in the orifices of the deceased. Some jurists deemed it desirable to prevent anything from exiting those passages. As for standing for the funeral procession, some jurists considered it desirable, while others viewed it as abrogated, stating that the Prophet, peace and blessings be upon him, stood then sat, and that adopting the latter of his actions is more appropriate.