Is the Hadith, Aubergine is a cure for every illness, authentic?

No, it is fabricated.

Leading authorities in Hadith have declared this narration to be fabricated.

فَأَكَلَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بَاذِنْجَانَةً فِي لُقْمَةٍ وَقَالَ: إِنَّمَا الْبَاذِنْجَانُ شِفَاءٌ مِنْ كُلِّ دَاءٍ وَلا دَاءَ فِيهِ “. هَذَا حَدِيثٌ مَوْضُوعٌ عَلَى رَسُول الله صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ
So the Prophet ﷺ ate aubergine in a morsel and said, ‘Indeed aubergine is a cure for every illness and there is no illness in it. This is a fabricated Hadith. (Imam Ibn al-Jowzi, al-Mowdo’aat).

حديث: “أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَكَلَ بَاذِنْجَانَةً فِي لُقْمَةٍ. وَقَالَ: إِنَّمَا الْبَاذِنْجَانُ شِفَاءٌ مِنْ كل داء. هو موضوع.
Indeed, the Prophet ﷺ ate aubergine in a morsel and said, ‘Indeed aubergine is a cure for every illness.’ This is fabricated. (Imam al-Showkani, al-Fawaid al-Majmo’ah).

If someone is claiming that this Hadith is authentic then he or she must prove it. Which means they must reference it to a primary book of Hadith with a sound chain of narrators. It is not acceptable to source a Hadith to a secondary or tertiary book in order to reference it. People who do this, lack knowledge regarding the science of Hadith. Nor is it sufficient to say it has a chain, therefore it is authentic. People who say such things are unaware of even the fundamentals of Hadith science.

And Allah (Most High) Knows best.

– Answered by Shaykh Noorud-deen (23.06.2021)

See also:

Is the Hadith, Aubergine is for whatever it is eaten for, fabricated?

Are there authentic Hadith encouraging us to eat aubergine?

See also (video):