Musannaf Ibn Abi Shayba 22:117

Abu Mu'awiyah and Hafs narrated to us, from al-A'mash, from Sufyan, who said: Abdullah said: "I have heard the reciters, and I found them to be close to one another. So recite as you have been taught, and beware of affectation (al-tanaṭṭuʿ) and disagreement." Abu Mu'awiyah added: "It is only like one of you saying 'come here' (halumma) and 'come' (taʿāla)."