Virtues and Merits of the Prophet (pbuh) and his Companions

Bukhari :: Book 4 :: Volume 56 :: Hadith 726

Narrated Ibn 'Abbas:

If you wish to know about the ignorance of the Arabs, refer to Surat-al-Anam after Verse No. 130:--Indeed lost are those who have killed their children From folly without knowledge and have forbidden that which Allah has provided for them, inventing a lie against Allah. They have indeed gone astray and were not guided.' (6.14)