Nikaah & Marriage Issues

Q: Is it permissible for a husband to beat his wife? Men justify the beating by saying there is a hadith to say that hitting is permissible. If this hitting is not permissible, what will be the consequences in the akhirah?

Q: What age is best for a parent to give their child a phone?

Q: I wanted to marry a girl but later they told me that her mother breastfed me once when I was less than one year. I researched about it and according to my knowledge in Quran it is forbidden to marry but there is no evidence of how many times of breastfeeding is required. From hadith I found that there is one hadith from Hazrat Aaisha (radhiyallahu anha) which states that five breastfeeding is required to make it haram. Please guide me regarding this issue.

Q: I would like to ask if I take money from my husband without him knowing, to spend on my parents, is this allowed?

Q: Is it better to refrain from hitting a child when they do something wrong?

Q: 

1. What is the Shari' status of getting married? Is it Fardh, sunnah muakkadah, wajib, etc.? 

2. What should be the niyah of a person who wants to get married? 

3. What is the sunnah method of getting married. i.e. How did the Prophet (sallallahu alaihi wasallam) conduct marriages in his time.

Q: We are 4 children (2 daughters and 2 sons). My father passed away a few months ago. Who is responsible for taking care of and for the financial needs of my mother?

Q: During the time of nikaah, can the bride stipulate a condition upon signing of nikaah documents that she would not allow the groom to have a second wife. Is that allowed?