Sri Ramana Maharshi - Ulladu Narpadu - Reality In Forty Verses, V.26

Explanatory paraphrase: 

If the ego comes into existence, everything [all phenomena, everything that appears and disappears, everything other than our pure, fundamental, unchanging and immutable self-awareness] comes into existence; 

If the ego does not exist, everything does not exist [because nothing other than pure self-awareness actually exists, so everything else seems to exist only in the view of the ego, and hence it cannot seem to exist unless the ego seems to exist]. 

[Therefore] the ego itself is everything [because it is the original seed or embryo, which alone is what expands as everything else]. 

Therefore, know that investigating what this [the ego] is alone is giving up everything [because the ego will cease to exist if it investigates itself keenly enough, and when it ceases to exist everything else will cease to exist along with it].

http://happinessofbeing.blogspot.com/2017/10/ulladu-narpadu-tamil-text.html -  Uḷḷadu Nāṟpadu: Tamil text, transliteration and translation

https://shinymoonbird.tumblr.com/search/UN%20v.26 - Verse 26

Arunachala Shiva - The Divine Mountain ॐ 

யதார்த்தமா யுள்ளது ஆத்மசொரூப மொன்றே. ஜக ஜீவ ஈச்வரர்கள், சிப்பியில் வெள்ளிபோல் அதிற் கற்பனைகள். இவை மூன்றும் ஏககாலத்தில் தோன்றி ஏககாலத்தில் மறைகின்றன. சொரூபமே ஜகம்; சொரூபமே நான்; சொரூபமே ஈச்வரன்; எல்லாம் சிவ சொரூபமாம்.

What actually exists is only ātma-svarūpa [the ‘own form’ or real nature of oneself, which is pure self-awareness]. 

The world, soul, and God are kalpanaigaḷ [imaginations, fabrications, mental creations or illusory superimpositions] in it, like [the imaginary] silver [seen] in a shell. These three appear simultaneously and disappear simultaneously. Svarūpa [our ‘own form’ or actual self] alone is the world; svarūpa alone is ‘I’ [our ego, soul or individual self]; svarūpa alone is God;

everything is śiva-svarūpa [our actual self, which is śiva, the absolute and only truly existing reality]. 

Bhagavan Sri Ramana Maharshi - WHO AM I?, Paragraph Seven

Arunachala - Digital Art by Juergen Puetz (Palmyrart)

ஜாக்ரம் தீர்க்கம், சொப்பனம் க்ஷணிக மென்பது தவிர வேறு பேதமில்லை. ஜாக்ரத்தில் நடக்கும் விவகாரங்க ளெல்லாம் எவ்வளவு உண்மையாகத் தோன்றுகின்றனவோ அவ்வளவு உண்மையாகவே சொப்பனத்தில் நடக்கும் விவகாரங்களும் அக்காலத்திற் றோன்றுகின்றன. சொப்பனத்தில் மனம் வேறொரு தேகத்தை யெடுத்துக்கொள்ளுகிறது. ஜாக்ரம் சொப்பன மிரண்டிலும் நினைவுகளும் நாமரூபங்களும் ஏககாலத்தில் நிகழ்கின்றன.

Except that waking is dīrgha [long lasting] and dream is kṣaṇika [momentary or lasting for only a short while], there is no other difference [between these two mind-created states]. To the extent to which all the vyavahāras [doings, activities, affairs or occurrences] that happen in waking seem [at this present moment] to be real, to that same extent even the vyavahāras that happen in dream seem at that time to be real. In dream the mind takes another body [to be itself]. In both waking and dream thoughts and names-and-forms [the objects of the seemingly external world] occur in one time [that is, simultaneously].

Bhagavan Sri Ramana Maharshi - WHO AM I?, Paragraph Eighteen