Doubting whether one read tasbeeh in sajdah correctly

Q: I was praying Fajr and generally at this time my brain cannot remember things well (just got up!). First, I am a non Arabic speaker so I have to deliberately pronounce well to avoid pronunciation mistakes. I was praying the second rakah of Fajr and I forgot whether I said Subhaana rabbiy al-a'laa correctly in the first rakah. I was not sure but I ignored this doubt and continued and not repeat Fajr. Did I do the right thing?

Repeating a nikaah

Q: Can a person do nikah twice with the same woman. I am from Pakistan, residing in China. Can I do nikah with my fiance there and when I come back to Pakistan I do nikah again. Our parents are willing to our marriage.

Does making fun of another language result in making fun of the signs of Allah

Q: "And among the signs of His power is the creation of the heavens and the earth and diverse language and skin color. Surely, with that situation actually there are signs for people who know" (Ar-Rum:22)

According to an intrepretation. If I make fun of someone speaking in other language which seems funny, is it as if I made fun of a language (Allah's sign) and thereby kufr?

Distributing properties of an estate that were put on different peoples names to avoid tax

Q: I am willing to distribute my inheritance. We are 2 brothers and 3 sisters. My father made some properties in his life and they were put on different peoples names like me, my wife, my brother and his wife and my mother. This was only done to avoid any kind of tax. There were also some properties on my father's name. I would like to ask which properties should we include in the estate when distributing between my sister, mother, brother and me?

Working for a company that charges a fee to do homework and assignments for students

Q: I want to ask if it is halal and permissible by law to get paid to do someones homework, college and university assignments, thesis and so on. Students hire us and provide us the material/structure or question given by a professor or teacher and we write answers for them with a fee. I work for the company who provides this service to international students. Should I leave this job or wait until I get another one?

Is it necessary to make intention for ghusal of janaabat?

Q: Is there any niyyat specially for ghusl. I hear people say things like:

Niyyah for Ghusl Bath after having sexual intercourse. "Nawaithu an’ahthasila huslan minal’janaabathi wathahaarathan lil’badni waa’sthibaahathan lis’salaathi ashhadu’anlaahilaaha il’lal’lahu wa’ashadu an’na’muhammadar’rasoolul’lahi.

If I just say that I am taking ghusl to clean myself from janabat, is this okay or doI have to recite the above?