Silsilah as-Sahihah 1154 — Pretentious speech is disliked

It is narrated from Sayyiduna Abdullah bin Amr (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."