Al-Bidaya wa Al-Nihaya, PDF, in Arabic with harakat (Wikisource)

These are files (ebook) in pdf format about Al-Bidayah wa An-Nihayah (sometimes spelled as Al-Bidaya wa Al-Nihaya, Al-Bidaya wa'l-Nihaya, or incorrecty just Bidaya wa Nihaya), a grand work of Ibn Kathir written in 14th century AD. 
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Contents are in public domain and also available online in Arabic Wikisource here. They are in original texts in Arabic with harakat to help readers who have not accustomed to read Arabic text fluently. Al-Bidayah wa An-Nihayah has 21 juz(s) and every file contains one juz posted in Ziddu.
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Juz 00 Juz 01 and Juz 01p Juz 02 Juz 03 Juz 04 Juz 05 Juz 06 Juz 07 Juz 08 Juz 09 Juz 10

Juz 11 Juz 12 Juz 13 Juz 14 Juz 15 Juz 16 Juz 17 Juz 18 Juz 19 and Juz 19p Juz 20 Juz 21 and Juz 21p

Another Ibn Kathir's work is a commentary of Quran, Tafsir Ibn Kathir. An Ebook of Tafsir Ibn Kathir is available here.