Did Junayd al-Qawariri remain for twenty years praying four hundred rak'ahs every day and eating only from Friday to Friday?

The questioner did not pose a question, but what was mentioned about Al-Junayd concerning prayer was cited by more than one scholar. Al-Khatib al-Baghdadi and Al-Dhahabi reported that Al-Junayd used to go to the market daily, open the door of his shop and enter, then draw the curtain and perform four hundred rak'ahs of prayer, after which he would return home. As for fasting, nothing has been found regarding it.