It was narrated that Saeed bin Jubair said:
"I was with Ibn Abbas in Arafat and he said: 'Why do I not hear the people reciting Talbiyah?' I said: They are afraid of Muawiyah.' So Ibn Abbas went out of his tent and said: "Labbaik Allahumma Labbaik, Labbaik! They are only forsaking the Sunnah out of hatred for Ali.'"