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The Single Monad is a concept in Ibn Arabi's philosophy that refers to the only real being that manifests itself in all the forms of the universe1 2. It is the metaphysical point that forms the unit of space-time geometry, and it is the source of all the attributes of God1. The Single Monad is also the principle of unity and diversity, as it encompasses all the possible modes of existence in its essence, and it expresses them in its acts2. Ibn Arabi considered the Single Monad to be the ultimate reality and the perfect mirror of God, and he used it to explain the mysteries of creation, revelation, prophecy, and eschatology2. The Single Monad is one of the most original and influential contributions of Ibn Arabi to Islamic thought, and it has inspired many scholars and mystics throughout history2. 

Source(s) 

1. The Single Monad Model of the Cosmos: Ibn Arabi’s Concept of Time and ... 

2. SINGLE MONAD MODEL - A: Ibn Arabi's Printed Works (in Arabic): 

3. SINGLE MONAD MODEL - C: English Translations and Studies on Ibn Arabi ...