Musnad Ahmad 30:2441

Yahya ibn Sa'id al-Qattan narrated to us, from Ubaydullah, who said: Sa'id ibn Abi Sa'id narrated to me, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Beware of injustice, for injustice is darknesses with Allah on the Day of Resurrection. And beware of obscenity, for Allah does not love obscenity or the seeking of it. And beware of stinginess, for it called those who were before you, so they made their forbidden things lawful, shed their blood, and severed their ties of kinship."