According to Shaikh al-Islam: “When someone fell ill or suffered an affliction,
Khaircha would go to him and recite the Fatiha [the Opening Sura of the Quran and
breathe upon him. That person would recover there and then. An erudite scholar once
suffered from toothache, so he went to Khaircha, who recited the Opening Sura and
breathed upon him. His toothache was cured, but he said: ‘O Khaircha, you do not recite
the Fatiha correctly. Shall I teach you to recite it correctly?’ Khaircha said: ‘No, you
must correct your heart!’”

-Nafahat al Uns