Musnad Ahmad 28:374

Khalaf ibn al-Walid narrated to us, Ibn 'Ayyash narrated to us, from Sulayman ibn Sulaym, from 'Amr ibn Shu'ayb, from his father, from his grandfather, who said: Umaymah bint Ruqayqah came to the Messenger of Allah, may Allah bless him and grant him peace, to pledge allegiance to him upon Islam. He said: "I pledge allegiance to you that you will not associate anything with Allah, you will not steal, you will not commit adultery, you will not kill your children, you will not bring forth a slander that you fabricate between your hands and your feet, you will not wail, and you will not display your adornments in the manner of the display of the first Jahiliyyah."