Arabic (Original)
حَدَّثَنَا عَفَّانُ حَدَّثَنَا أَبُو عَوَانَةَ عَنْ يَزِيدَ بْنِ أَبِي زِيَادٍ عَنْ مُجَاهِدٍ عَنْ ابْنِ عُمَرَ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ مَا مِنْ أَيَّامٍ أَعْظَمُ عِنْدَ اللَّهِ وَلَا أَحَبُّ إِلَيْهِ الْعَمَلُ فِيهِنَّ مِنْ هَذِهِ الْأَيَّامِ الْعَشْرِ فَأَكْثِرُوا فِيهِنَّ مِنْ التَّهْلِيلِ وَالتَّكْبِيرِ وَالتَّحْمِيدِ.
English Translation
Affan told us: Abu Awanah told us, from Yazid ibn Abi Ziyad, from Mujahid, from Ibn Umar, from the Prophet, peace and blessings be upon him, who said: 'There are no days on which good deeds are greater or more beloved to Allah than in these, the first ten days (of Dhu al-Hijjah), so increase during them in tahlil (saying there is no god but Allah), takbir (saying Allah is greatest), and tahmid (praising Allah).'