ANSWER:

This is correct despite the fact that he is a deviant Sufi.

As long as a person knows what to recite in the salah, it’s sufficient. However, a Muslim must always aim higher to gain more rewards.

My who is a suffi claims that it’s not must to learn the Qur’an fully u can just learn the fatiha n other few short surahs for Salah n its sufficient. He is asking any authentic hadith or Qur’an that says learning the Qur’an is must.