Imaam Ahmad, an-Nasaa`ee, at-Tirmidhee and Ibn Hibbaan in his Saheeh report the hadeeth of Ka’b ibn Maalik al-Ansaaree, (radhiyallaahu ‘anhu) from the Prophet (sallallaahu ‘alayhi wa sallam) that he said:
Two hungry wolves let loose among sheep are not more harmful than a person`s craving after wealth and status is to his Deen (Religion)
At-Tirmidhee said, “It is hasan saheeh.”
It was also said in some narrations from the People of the Book:
“Provision has already been allotted and the one greedy for wealth is deprived. Son of Aadam! If you spend your life in seeking after this world then when will you seek after the Hereafter?” If you are unable to do good deeds in this world, then what will you do on the Day of Resurrection?”
The Evil of Craving for Wealth and Status, by al-Haafidh Ibn Rajab al-Hanbalee (rahimahullaah)
Miftaahul-Ilm - Key to Knowledge 