English of Core Text: Chizkiyah said: From where do we know that whoever adds, detracts? As it is said “God said, You shall not eat of it and you shall not touch it.”
On the daf / in context: Chavah’s addition of the prohibition of touching (which God had not said) is the classic illustration that an unwarranted addition leads to loss of the original command.
Type of Learning: Custom (adding to a command diminishes it)What Is Learned: Whoever adds to a divine command thereby diminishes it; Chavah’s extra “do not touch” is the paradigm.