Is it understood from the hadeeth that the Hajj of a son on behalf of his father is obligatory or is it just for the sake of the son honoring his father?

Question Assalamu Alaikum wa Rahmatullahi wa Barakatahu our Ameer, We members from Hizb in the prison deal with a serious problem. It is well known for us that perfumes containing alcohol as well as medicine containing the same are Najas. But the imam that we pray behind in prison uses these types of perfumes and he refers to what is said in books of Islamic rulings (fatwa). And therefore we…

Why is the evidence of the establishment of the Khilafah "Caliphate" not taken from the Medinese period, where Jihad was valid and applied? Is there a clear-cut sufficient answer to the issue? One where the pilgrims stand in Arafat and then depart to Muzdalifah, and the second where the pilgrims stand in Muzdalifah and depart to Mina? Knowing that according to our information, the Wuquf (standing) is in ‘Arafat and from…

nowadays poisonous substances are mixed with alcohol to prevent its intoxication, causing it to become a poisonous substance that is not intoxicating.  The question here is whether the "toxic alcohol produced for perfumes" is impure (Najis), corrupting the purity of the clothing?  . in these cases they cannot be consumed internally (due to the change of its chemical state). What is the Hukm on their usage?