Tikkunei Zohar 17a which says:
The prophet Elijah, of blessed memory, opened, and said: Eternal Hidden Master of the worlds! You are He whose Unity is infinite and absolute, and therefore indivisible. You are He1, transcendent beyond all that is above, and concealed behind all that is concealed. No thought whatsoever can grasp You. But You are He who brought forth ten rectifications - we call them the ten sefirot Atzilut - with which to regulate hidden worlds that are not revealed, as well as worlds that are revealed. Indeed, it is through these that You are hidden from human beings. You are He who binds them and unifies them. And inasmuch as You are within them, anyone who separates one from the other is regarded as having caused a separation in You.
This text is recited by many at Mincha of erev Shabbat.
If you continue to read the text cited above it explains how the Sefirot correspond to G-d's name.
ואלו עשר הספירות, משתלשלות כסדרן: אחת ארוכה, ואחת קצרה, ואחת בינונית. ואתה הוא שמנהיג אותם, ואין מי שינהיג אותך, לא למעלה, לא למטה ולא משום צד. לבושים הכנת להם, מהם פורחות נשמות לבני אדם, וכמה גופים הכנת להם שנקראים גוף לגבי הלבושים המכסים עליהם, ונקראים בתיקונם כך: חסד - זרוע ימין, גבורה - זרוע שמאל, תפארת - הגוף. נצח והוד - שתי שוקיים. יסוד - סיום הגוף, אות ברית קודש. מלכות - פה, תורה שבעל פה היא נקראת.
חכמה - המוח, והוא פנימיות המחשבה. בינה - היא הלב, ובה הלב מבין. ועל שני אלו כתוב "הַנִּסְתָּרתֹ לַה' אלהֵינוּ". כתר עליון הוא, והוא כתר מלכות, ועליו נאמר - "מגִּיד מֵרֵאשִּית אַחֲרִּית", והיינו תפילין של ראש. בפנימיות הוא יו"ד ה"א וא"ו ה"א, והוא בדרך אצילות, המשקה את האילן בזרועותיו וענפיו, כמים המשקים לאילן ומתגדלים אותו בהשקיה זו.
That in this text, the Sefirot are equated with the letters of G-d's name (יהוה). They are imagined in vertical orientation, from top to bottom beginning with the letter Yud.
In orientation like this, they form the shape which corresponds with and is the paradigm for a male physical body. It also corresponds to the form of the Mishkan and Mikdash when viewing it from above. For details, see diagrams relating to Hilchot Beit HaBechirah in the Mishneh Torah.
The letter Yud corresponding with the head which contains the brain of Chochmah. The Kutz or Crown at the top of Yud is Keter.
The Nexus point between the bottom of the Yud, the cross beam of the first Heh and the top of the Vav is the place of the heart which corresponds to Binah. This is why Binah is described with the qualities of breadth and depth.
The right and left arms of the first letter Heh correspond with Chesed and Gevurah.
The main body of the letter Vav corresponds with Tiferet.
The nexus point between the end of the Vav and the cross beam of the second Heh is called the end of the body. This corresponds with Yesod while the right and left legs of the second Heh correspond to Netzach and Hod.
What is called the Mouth is referring to what would correspond to the mouth of the genitals. That corresponds to Malchut.
There is a similar, but different scheme for G-d's name which corresponds to the human female. But that is not outlined in this section of the Zohar.
