Musnad Ahmad 1034:39

Waki’ narrated to us, Razin ibn Habib al-Juhani narrated to us, from Abu al-Ruqad al-‘Absi, from Hudhayfah, who said: "A man would speak a word during the time of the Prophet, may Allah bless him and grant him peace, and because of it he would become a hypocrite. And I hear it from one of you today in a single gathering ten times."