What is the ruling on \”Drinking Water while standing\”? Is it Haraam, Halaal, Wajib, Mustahib etc and what are the conditions.? Please clarify as there is too much confusion on this issue.

Drinking water when standing is permissible. Unless at night, it must be consumed while sitting down. This is according to the narrations of Imam Sadiq (a.s). It is Makruh to drink water while standing up at night.