Mazi coming out while one is leading the Salaah

Q: While leading the salaah, I had a feeling that mazi may have been discharged, but was not sure. When I returned home, I found a slight wetness
at the tip of my private area, and it was only when I began to clean it that the mazi began come out. Now I am uncertain if it remained in the passage 
during salaah and began to come out as a result of walking, or if any came out during salaah. Firstly, will it be necessary for the congregation to repeat the salaah? Secondly, is this common, or is it a medical issue?

Husband telling the wife "Tumhe azadi ho jo chaho dekho"

Q: One day in a fight my wife on her freedom to watch any program on Television, she said she will watch anything on Television irrespective of my stoppage. I said that "Meri taraf se tumhe azadi ho jo chaho dekho lekin suba gane mat suna karo". Please advise in the light of above circumstances if my above sentence constitute Talaq e Bain as I heard azad word constitutes Talaq without any intention?

Inheritance

Q: My 2 month old son passed away. He has 750 pesos in his estate. Both his parents are alive and he has one brother and one sister. His grandparents and uncles are also alive. Please advise.

Black mendhi

Q: Someone has asked me to mix black mendi for them so they can apply it to the white hairs of their beard. I heard black mendhi or black dye is impermissable. So if I mix red mendhi with the black mendhi and make it dark brown will this be allowed?