We often use the term "Hafiz e Quran" for the people who have memorized it. But as far I know, Al-Hafiz is one of the attribute of Allah. So it seems like shirk to use this term for a person who memorizes it. Can anyone please let me know…

  * …is it a jaiz term to use for people who memorizes Quran?
  * …which term did come in Quran and Hadith for the people who memorized Quran?
  * …here does this term "Hafiz e Quran" for the people who memorize it come from? 

Please give answer with the reference from Quran and Hadith with the reference number so that I can cross check.