[Machine] Abdullah used to say, "The Takbeer (saying 'Allahu Akbar') is to be said during the days of Tashriq, after the Fajr prayer of the Day of Arafa until after the Asr prayer of the Day of Sacrifice."
كَانَ عَبْدُ اللهِ يَقُولُ «التَّكْبِيرُ أَيَّامَ التَّشْرِيقِ بَعْدَ صَلَاةِ الصُّبْحِ مِنْ يَوْمِ عَرَفَةَ إِلَى بَعْدِ الْعَصْرِ مِنْ يَوْمِ النَّحْرِ»
[Machine] Ibn Masood came to us and he used to say, "The Prophet ﷺ would prolong the prayer of Fajr (dawn prayer) on the day of Arafah (the ninth day of the Islamic month of Dhul-Hijjah) until the prayer of Asr (afternoon prayer) on the last days of Tashreeq."
قَدِمَ عَلَيْنَا ابْنُ مَسْعُودٍ فَكَانَ «يُكَبِّرُ مِنْ صَلَاةِ الصُّبْحِ يَوْمَ عَرَفَةَ إِلَى صَلَاةِ الْعَصْرِ مِنْ آخِرِ أَيَّامِ التَّشْرِيقِ»