Sunnah.com reference : Book 2, Hadith 384English translation : Book 2, Hadith 0Arabic reference : Book 2, Hadith 463
A narration of Muslim has:
"This time is brief."
وَفِي رِوَايَةٍ لِمُسْلِمٍ: { وَهِيَ سَاعَةٌ خَفِيفَةٌ }   1‏ .‏‏1 ‏- مسلم (852)‏ (15)‏.‏