Is it recommended to memorize the Quran without understanding the words?

Is there any hadith or Quranic ayat which encourages just memorizing Quran without understanding it? In our country Pakistan, it is a well established common thing to memorize Quran but those people don't understand even a single ayat and still think that they will be able to provide intercession for their family on the day of qiyamah. Please give references for both sides of this argument.