Sunan Abi Dawud

Narrated Khuraym Ibn Fatik: The Messenger of Allah (ﷺ) offered the morning prayer. When he finished it, he stood up and said three times: False witness has been made equivalent to attributing a partner to Allah. He then recited: ""So avoid the abomination of idols and avoid speaking falsehood as people pure of faith to Allah, not associating anything with Him