Bulugh al-Maram, Book 10, Hadith 1247 (In-Book)

'Umar (RAA) narrated, 'When the prohibition of Khamr (alcoholic drinks) was revealed, it used to be made from grapes, dates, honey, wheat and barley. Khamr is what shields one's mind' Agreed upon.

وَعَنْ عُمَرَ ‏- رضى الله عنه ‏- قَالَ: { نَزَلَ تَحْرِيمُ اَلْخَمْرِ, وَهِيَ مِنْ خَمْسَةِ: مِنْ اَلْعِنَبِ, وَالتَّمْرِ, وَالْعَسَلِ, وَالْحِنْطَةِ, وَالشَّعِيرِ.‏ وَالْخَمْرُ: مَا خَامَرَ اَلْعَقْلَ } مُتَّفَقٌ عَلَيْه ِ (1624)‏.‏ ‏3 ‏- صحيح.‏ رواه البخاري ( 5581 )‏، ومسلم ( 3032 )‏.‏

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also referenced under: Book 10, Hadith 1286 (English)