Sunan Ibn Majah 1504
سنن ابن ماجه#1504Sahihحَدَّثَنَا أَبُو هِشَامٍ الرِّفَاعِيُّ، وَمُحَمَّدُ بْنُ الصَّبَّاحِ، وَأَبُو بَكْرِ بْنُ خَلاَّدٍ قَالُوا حَدَّثَنَا يَحْيَى بْنُ الْيَمَانِ، عَنِ الْمِنْهَالِ بْنِ خَلِيفَةَ، عَنْ حَجَّاجٍ، عَنْ عَطَاءٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ كَبَّرَ أَرْبَعًا .
It was narrated from Ibn ‘Abbas that the Prophet (ﷺ) said Takbir four times
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih Lighairihi
Zubair Ali ZaiSahih
In-book reference: 6:72