The ruling on one who swears an oath never to speak to anyone again?

The questioner : ... with the hadiths of the Prophet (peace and blessings be upon him) from al-Ruhwa, so he said to him: "I will never speak to you again." After a period of time, this man wanted to travel, meaning a migration of three years, so someone spoke to him about sending a letter with him, perhaps Allah (Glorified and Exalted is He) would guide his heart. Does he have to expiate his oath here?

The Shaykh : It is necessary.

The questioner : Must he expiate his oath?

The Shaykh: It is known.

The questioner : May Allah reward you with good.

The Shaykh : And beware of that.