The Prayer of the Heart in Hesychasm and Sufism

SEYYED HOSSEIN NASR
The goblet revealing the universe is the heart of the perfeet
man;
The mirror that reveals the Truth is in reality this heart.
The heart is the depository of the treasures of the Divine
Mysteries;
Whatever you seek in the two worlds, ask the heart and you
shall attain it.
Shams al-Dïn Lâhïjï, Sharfa-i gulshan-i räz

The Prayer of the Heart in Hesychasm and Sufism (Nasr)