I was with Ibn Abbas at Arafat when he said, "Why is it that I do not hear the people calling the talbiyah?"I replied, "They fear Muawiya."So Ibn Abbas came out of his tent and called out, "Labbayk Allahumma labbayk, labbayk! Indeed, they have abandoned the Sunnah out of hatred for Ali."
أخبرنا أحمد بن عثمان بن حكيم الأودي قال حدثنا خالد بن مخلد قال حدثنا علي بن صالح عن ميسرة بن حبيب عن المنهال بن عمرو
كنت مع ابن عباس بعرفات فقال ما لي لا أسمع الناس يلبون قلت يخافون من معاوية فخرج ابن عباس من فسطاطه فقال لبيك اللهم لبيك لبيك فإنهم قد تركوا السنة من بغض علي
No references are available.
[Its isnad is hasan] Ahmad narrated it: 5/209, from Hushaym through the same route. It is also in Al-Kubra, no. 4007, and Ibn Khuzayma graded it sahih, part 2824. Its related passages have been mentioned previously, no. 2917, 2918, and others.