Hadith.4756 - A man came to the Commander of the Faithful (as) and said:
"O Commander of the Faithful, I have divorced my wife."
Imam (as) asked: "Do you have any evidence (witnesses)?"
The man replied: "No."
So Imam (as) said: "Be gone (uʿzub)."
Al-Kāfi #252“Once, a man in al-Kufah came to ’Amir al-Mu’minin (a.s.), and said, ‘I have divorced my wife after she became clean from her Hayd (menses)...