Matthew 13:10
And the disciples came, and said to him, why do you speak to them in parables?
Mark 4:10
And when he was in private, the twelve, and some of his disciples asked him the meaning of the parable.
Mark 4:33-34
Thus he instructed them by such a variety of parables as were adapted to their capacity.
Treasury of Scripture Knowledge
Summary
And the disciples came, and said unto him, Why speakest thou unto them in parables?