This tafsir is not merely a rehash of ancient opinions. Instead, it is designed as a —detailed enough for academics but simplified enough for the average educated Muslim. It spans 15 volumes in its complete Arabic edition, but the version most sought after as a PDF is often the summarized, single-volume or multi-volume set that focuses on clarity without compromising depth.
If you're looking for a PDF version of "Al-Asas fi Tafsir", here are a few possible sources: al asas fi tafsir pdf