Paying off gambling debts of the deceased

Q: A member of our community as an heir would like to know if it's permissible to pay off gambling debts accrued by the deceased to pay off multiple gambling debts accrued to Muslims and non Muslims. 

Notes: 

1. A member of family has come forward to assist with these debts as they too want to rid of their unwanted interest income in order to assist with paying off these debts. 

2. The deceased does have an income deriving property asset in his estate but the income is little to none and will take years to save and accumulate the funds required to pay off the gambling debts.

Husbands telling his wife "you are free" without intending divorce

Q: There was an argument over a mobile message. My wife said, "Leave me." I told her not to say that, but she repeated, "Leave me." I replied, "You are free," but I had no intention of divorce, nor did I know that saying such words could lead to a divorce. Later, my wife told me that I had used the wrong words. After that, we reconciled. 

Four months later, during another argument about household chores, my wife said, "I won't do this." I replied, "Then you are free," but at that time, divorce or separation was not being discussed. Later, I realized that I had said something wrong. 

How many divorces have taken place in our case?

Keeping the name Uthmaan and name having an effect on the child

Q: I wanted some information regarding naming my son Uthmaan after the Sahabah Uthmaan bin Affan (radhiyallahu anhu). We have heard a lot of good about this Sahaabi but wanted Mufti Saheb to share some information regarding him which is authentic as well as if you can send information regarding the meaning of Uthmaan. 

I also wanted to know, does the meaning affect the child or if the child is named after someone will that affect the child?