Imaamat and jamaat salaah for a muqeem and musaafir

Q:

1. If a Muqeem reads Salah behind a Musafir does he have to make intention for praying behind a Musafir?

2. If he makes intention of praying behind a Musafir whereas the Imam is a Muqeem, does he have to repeat the Salah?

3. What happens if a person reads a Surah in the 3rd Rakat of a Fardh Salah? Does it have to be repeated?

4. If two people read Salaah and the Musalli does not have Wudhu does the Imam have to repeat his Salah?

5. If two people are reading Salah and the Musalli by mistake makes intention of reading another Salah does the Imam have to repeat the Salaah?

6. If a person has missed a Salah whilst travelling and does Qadha at home does he have to read 2 or 4 Rakats?

Growing the beard to the extent of one fist

Q: The ahadith on beard have been reported with different formulations: The word "Arkhoo" is mentioned in Saheeh Muslim. The words "Waffiroo, Awfiroo, Awfoo, A'foo" are mentioned in Saheeh Bukhari and Saheeh Muslim. Imam Nawawi (r) commenting in his Sharh Saheeh Muslim on the different terms used by the Messenger of Allah (sallallahu alaihi wasallam), arrives at the following conclusion: "The meaning of which appears all these ahadith is that a person should grow his beard. "

Zakaat related questions

Q: Me and my brother take care of my uncle's family and their monthly needs (grocery rent etc). My question is that as it is the month of Ramadaan , I need to pay zakaat so can I use to zakaat money I owe this year to maintain their daily needs for the next month. I am concerned because I manage their expenses every month from my own money, so is it fine to use zakaat money this time?

Second question: My mother has some 10 grams of gold and my father passed away. Do I need to consider the gold as my belonging while calculating my zakaat?

Explaining to a non-Muslim about the prohibition of alcohol in Islam

Q: I have come into contact with a guy at work, who had already researched a lot about Islam via the internet. So I've explained to him that to be a Muslim he requires belief in Tawhid (Monotheism) and Risaalat (the prophethood of Nabi Sallallahu Alayhi Wasallam). I took him to the Musjid to see how we offer Salaah etc. He says he believes in Monotheism, but now he's got one question. Why could Islam unconditionally stop/forbid Alcohol, while it only regulated Slavery, and did not forbid it? I couldn't answer him, I replied by saying that it was eventually forbidden, and it was over a period of time, so that the people will willingly accept and obey, he was however not satisfied with my answer. Is there anything wrong in what I said? and please provide an answer.

Illicit relationships

Q: I have caught my father researching escort agency's twice and I am not sure how to handle it. The first time I did tell my mother and he denied going to any, yesterday my mother and I were gone visiting and on our return the front door was locked. When questioned he said he was sleeping. Later the Internet history revealed he was on those sights. Moulana please advise how do I deal with the situation without embarrassing my father or hurting my mother? I was in denial before and though he was only viewing pictures however I don't think that is the situation. Also my father is pious and I am so shocked.