In shariah is there any restriction in buying big houses?

Q: My father is a doctor and he has retired from govt job and now he got some money so we have plan to get a new house as we live in a rented house. We can accommodate in 10 marla house but we have plan to get 1 KANAL house for more luxury so according to shariah is there any restriction in buying big houses as i heard in a hadees its theme was like "Worst money is that which is spent in construction" and on another occasion our PROPHET did not liked the construction of a SAHABI and  afterwards that Sahabi demolished that construction. So can we build luxury houses to live in?

Profits stipulated in proportion to the investment

Q: I live in a non-muslim country and I am paying loans with interest. I came by an article where you can invest money and get double or triple profit after two or three months. As per the article the investment goes in real estate transactions. Is such investment permissible? If the profit is considered as riba can such money be used to repay my loan which am already paying with interest?

Doing accounting for a firm in the lottery department

Q: I work for a chartered accounting company in British Columbia, Canada. There are various departments in our company and they provide accounting services to various companies. I work as a data entry person who enters data (information about people and their addresses) and I work in the lottery department. Our company does not deal with lottery selling, we just deal with the accounting and tallying and hand over the information to the foundation or clients. My job only entails office duties and entering data which prepares the lottery for the clients. Is this job permissible for me?

The name Naseem

Q: The name نسيم is the correct spelling with one S or two SS ? Please give correct spelling. Also the name Naim is it Nuaym or Naim? And the name Hasan with one S or two?

Writing out three talaaqs under duress

Q: My sisters husband gave her three talaaqs about two weeks ago. After five months of marriage. It was a letter signed by him & written in her absence, then brought to my sister by somebody she didn't know. Her father-in-law was behind all of this. Her husband said his dad wrote letter first, so he tore it up. Then his parents made him re- write it watching him. He said his dad would disown him if he goes against his dad. He even told my dad the day before that he still wants to be with my sister. She saw him crying when his dad made this decision for him. Now he says he didn't mean to. Clearly he was under duress will this talaaq still be counted?

Treating one's children equally

Q: If a mother says to her daughter, "when you were sick I was not so worried about you. But when your brother was sick I was worried to death. See he is a male child and I feared, without him what would be my life then."

Should a mother say all these words to her daughter? Are daughters so useless, although Islam has reached and all of muslims know what our Sahab (peace be upon him) said about daughters. Please tell me what Allah says about that mothers, saying all these words. Does a mother have a right to say anything to children (female), even hurting them?