NASAI-KUBRA 3979:
from Mā Lī Lā Asmaʿ al-Nās Yulabbūn Faqult Yakhāfūn from Muʿāwiyah Fakharaj Ibn ʿAbbās from Fusṭāṭih —
"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.'" (Using translation from Nasāʾī 3006)
الكبرى للنسائي ٣٩٧٩:
عن ما لي لا اسمع الناس يلبون فقلت يخافون عن معاويه فخرج ابن عباس عن فسطاطه —
«لَبَّيْكَ اللهُمَّ لَبَّيْكَ لَبَّيْكَ فَإِنَّهُمْ قَدْ تَرَكُوا السُّنَّةَ مِنْ بُغْضِ عَلِيٍّ»
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