Is it permissible to say "I am in the heart of God"?

It is not permissible to utter a word describing Allah Almighty as having a heart, because this has not been mentioned in the Qur’an or Sunnah. Allah is only described by what He has described Himself with or what His Messenger, peace and blessings be upon him, has described Him with. Allah has forbidden speaking about Him without knowledge.