Permissible and impermissible items of trade

Writing a fiction book

Q:

1. If a person wrote a book which is a mix of fiction and non fiction and they sell the book, is the money earned from that halaal?

2. If that same book has slight romance in it, will the money earned from it be halaal?

3. If that same book has swearing (which the readers will be warned of) then is the money earned from it halaal?

Selling a toy which contains music

Q: We have recently received stock of an Islamic toy which we were unaware had music... The toy has many beneficial learning pages such as duas, surahs, Arabic alphabets, etc. but there is a button which plays nasheeds with musical instruments in the background.

Will it be permissible to sell such a toy? If the toy is sold with a note on how to remove the music and if the customer purchases it and chooses not to remove the music wire, will the seller be sinful?

Buying and selling plot files

Q: I want to ask if it is allowed to sell and purchase plot files? The housing society is still underdevelopment and possession of plots is not given to file holders.

(The file is a document issued by a housing scheme developer, against which one can claim a piece of land/plot once development is done, and possession started by the developer)

Selling books with animate objects

Q: I want to sell physical health eBooks that may contain a few images of humans for the purposes of demonstration e.g. a fitness eBook demonstrating how to perform an exercise or movement. Both male and female images are found in the books and at times, a portion of the awrah of the males and females are exposed. However, this is for demonstrational and educational purposes.

What is the ruling on this and if I had earned wealth through selling these books, what is the status of my wealth, is it halaal or haraam?