Someone told me a theory based on the various aayaat of the Qur'aan Sharif.

Question

Someone told me a theory based on the various aayaat of the Qur'aan Sharif. These verses speak of Allah Ta'ala blowing something of HIS spirit into man, i.e. Hazrat Aadam (Alayhis salaam). The theory is as follows: Allah Ta'ala blew something of Himself into each person, which means that we carry something of Allah Ta'ala. In saying this it does not mean that Allah Ta'ala is missing something. Rather, it just means that we have something of Allah Ta'ala inside us. That is also why we never truly die. When we die we are immediately sent into Barzakh or a different dimension. Thereafter, depending on how we had lived on earth, will come either Jannah or Jahannam which are both eternal. The person states that the Awliya of Allah have this knowledge and Moulana Rumi (Rahmatullah alayh) makes mention, whenever he quotes things, of "what you are seeking is inside you" etc. Obviously because we have very little knowledge of the soul there isn't anything concrete that backs the theory. Its a mystical thing that a person comes to know once he reaches that stage. My reply was that I never heard anything of this before. In terms of aqeedah what do we believe with regards to this?