三界外  / sān jiè wài /
Outside the Three Realms 
Description:
無苦亦無樂,無明亦無昧。不屬三界中,亦非三界外。
Without suffering, and also without happiness;
Without brightness, and also without darkness;
Not belonging to the Three Realms,
and also not outside the Three Realms.
References:
星雲大師全集【書法類】中華文化佛教名詞 名相 The Complete Works of Venerable Master Hsing Yun: Calligraphy-Terminology 
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