Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:6185Abū al-Ḥasan al-ʿAlāʾ b. Muḥammad b. Abū Saʿīd al-Isfarāyīnī Bihā > Abū Sahl Bishr b. Aḥmad > Ḥamzah b. Muḥammad al-Kātib > Nuʿaym b. Ḥammād > Ibn al-Mubārak > Hishām al-Dastuwāʾī > Ḥammād > Ibrāhīm > ʿAlqamah > ʿAbdullāh b. Masʿūd > al-Takbīr

[Machine] Takbeer on both Eids is five in the first and four in the second, and this is the opinion of Abdullah. The authenticated hadith and the practice of the Muslims support following it, and success is from Allah.  

البيهقي:٦١٨٥وَأَخْبَرَنَا أَبُو الْحَسَنِ الْعَلَاءُ بْنُ مُحَمَّدِ بْنِ أَبِي سَعِيدٍ الْإِسْفَرَايِينِيُّ بِهَا أنبأ أَبُو سَهْلٍ بِشْرُ بْنُ أَحْمَدَ ثنا حَمْزَةُ بْنُ مُحَمَّدٍ الْكَاتِبُ ثنا نُعَيْمُ بْنُ حَمَّادٍ ثنا ابْنُ الْمُبَارَكِ عَنْ هِشَامٍ الدَّسْتُوَائِيِّ عَنْ حَمَّادٍ عَنْ إِبْرَاهِيمَ عَنْ عَلْقَمَةَ عَنْ عَبْدِ اللهِ بْنِ مَسْعُودٍ قَالَ

التَّكْبِيرُ فِي الْعِيدَيْنِ خَمْسٌ فِي الْأُولَى وَأَرْبَعٌ فِي الثَّانِيَةِ وَهَذَا رَأْيٌ مِنْ جِهَةِ عَبْدِ اللهِ ؓ وَالْحَدِيثُ الْمُسْنَدُ مَعَ مَا عَلَيْهِ مِنْ عَمَلِ الْمُسْلِمِينَ أَوْلَى أَنْ يُتَّبَعَ وَبِاللهِ التَّوْفِيقُ