حَدَّثَنَا ابْنُ الْمُثَنَّى، أَنَّ يَحْيَى بْنَ كَثِيرٍ الْعَنْبَرِيَّ، حَدَّثَهُمْ قَالَ كَانَ قُرَّةُ بْنُ خَالِدٍ يَقُولُ لَنَا يَا فِتْيَانُ لاَ تُغْلَبُوا عَلَى الْحَسَنِ فَإِنَّهُ كَانَ رَأْيُهُ السُّنَّةَ وَالصَّوَابَ ‏.‏

Yahya b. Kathir al-‘Anbari said: Qurrah b. Khalid used to tell us: O young people! Do not think that al-Hasan denied predestination, for his opinion (i.e., belief) was sunnah and sight. Translation Not Available

Book reference: Sunan Abi Dawud Book 42 Hadith 4623
Web reference: Sunan Abi Dawud Book 41 Hadith 4606