Aqaaid

Q: I don't remember from where I have read something about how Allah Ta'alas greatness grows continuously. Can you please grant me clarity about the aqeedah about this belief? 

Q: If I deliberately imagine about rebirth and a Hindu family for entertainment, would it be kufr? 

I watch tv serial and then imagine about the characters of the serial and they are Hindu. I know it's a major sin but is it equal to doing kufr? It is not unwanted thought, I imagine it intentionally.

Q: What is the ruling on a person of the Hanafi Maslak taking knowledge or rulings from people such as 'Sheik Assim Al-Hakeem' who is a Salafi?

Q: If my non-Muslim neighbour gives me money for my birthday, is it permissible for me to use that money?

Q: If someone (Muslim) calls a niqabi a "ninja" (not in a derogatory way or to mock niqab, nor to make fun of the person for wearing niqab), will it be kufr? 

What if the niqabi didn't think much of it and just passed it over as a joke, because she believes that the person was just joking and not trying to degrade her or something. 

Basically, a ninja can be considered good or bad, but it depends on what the ninja does (apparently).

Q: In the time of Imaam Mahdi, will the doors of Taubah still be open, because I heard in a bayaan that there are 3 times when the doors of Taubah will be closed, firstly when dajjal appears, secondly when the daabatul ard is in the world and finally when the sun rises in the west.

Q: What are the ways to increase our love for Nabi (sallalahu alayhi wassallam) and remembering him ?

Q: If someone did a good deed like istighfar, durood or giving sadaqah and is afraid that Allah will not accept their deed, will that make Allah not accept it? I heard someone say that you have to be certain that Allah will accept otherwise it will be not accepted. Kindly clarify.