Divination and Omens (Kitab Al-Kahanah Wa Al-Tatayyur)
Dawud :: Book 29 : Hadith 3901
Narrated Abdullah ibn Mas'ud:
The Prophet (peace_be_upon_him) said: Taking omens is polytheism; taking omens is polytheism. He said it three times. Every one of us has some, but Allah removes it by trust (in Him).