Musnad Ahmad 1163:35

Ishaq ibn Ibrahim al-Razi narrated to us, Salama ibn al-Fadl narrated to us, he said: Muhammad ibn Ishaq narrated to me, from Muhammad ibn Abdullah ibn Amr ibn Uthman, from Muhammad ibn Abd al-Rahman ibn Labiba, from Ubayd Allah ibn Abi Rafi, From Maymunah, the wife of the Prophet, may God bless him and grant him peace, she said: I heard the Messenger of God, may God bless him and grant him peace, saying: "My nation will continue to be in goodness as long as the child of adultery does not become widespread among them. But if the child of adultery becomes widespread among them, then it is imminent that God, the Almighty and Majestic, will envelop them in a punishment."