Silsilah Sahihah

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: "Indeed, Allah strongly dislikes among people the one who is eloquent in speech, who (opens his mouth wide and speaks with affectation and artificiality) repeatedly moves his tongue like a cow chews cud."

‘Umar bin Sa‘d says: I needed something from my father, and Abu Hayyan narrated from Majma‘: ‘Umar bin Sa‘d had some need from his father, but before expressing his need (as a prelude), he spoke in such a way as common people do to reach their needs. But Sa‘d was not paying any attention to his son’s words. When the son finished speaking, the father said: Son! Have you completed your speech? He said: Yes. The father said: After hearing your words (I have realized that) you are neither far from your need nor is there anyone who desires more good for you than I do. I heard the Messenger of Allah (peace and blessings be upon him) say: Soon there will arise people who will consume with their tongues as cattle graze on lush, green land.