Lubab an-Nuqul fi Asbab an-Nuzul - Imam as-Suyuti

One of the great collections on the causes of the revelation of the verses of the Quran, that of Hafidh Jalaal ad-Deen as-Suyootee.

It gathered 1162 Hadeeth or Athaqr, all classified according to the order of the suras.

Very nice Syrian edition verified, with detailed referencing and authentication of hadiths, search indexes by verse or hadith.