Quran 90:19 from Surah Al-Balad on Divine Marvels.
وَٱلَّذِينَ كَفَرُواْ بِـَٔايَٰتِنَا هُمۡ أَصۡحَٰبُ ٱلۡمَشۡـَٔمَةِ
English translation: But those who disbelieve in Our Verses they (are the) companions (of) the left hand
Transliteration: wa-alladhina kafaru biayatina hum ashabu al-mashamati