Jami` at-Tirmidhi Book 48, Hadith 224
“May my father and my mother be ransomed for you, O Messenger of Allah (ﷺ)! Which speech is most beloved to Allah ?” So he said: “That which Allah selected for His angels (to say): ‘Glory to my Lord, and with His praise. Glory to my Lord, and with His praise (Subḥāna rabbī wa biḥamdihi, subḥāna rabbī wa biḥamdihi).’”
“We were with the Messenger of Allah (ﷺ) when a man among the people said: ‘Allah is most exceedingly great, and praise is due to Allah, abundantly, and glory to Allah morning and night (Allāhu akbaru kabīran wal-ḥamdulillāhi kathīran wa subḥānallāhi bukratan wa aṣīlā).’ So the Messenger of Allah (ﷺ) said: ‘Who is the one who said such and such?’ So a man among the people said: ‘Me, O Messenger of Allah (ﷺ).’ He said: ‘I was amazed at it. The gates of heaven opened up for it.’” Ibn `Umar said: “I have not abandoned them since I heard from the Messenger of Allah (ﷺ).”
“The supplication is not rejected between the Adhan and the Iqamah.” They said: “So what should we say, O Messenger of Allah (ﷺ)?” He said: “Ask Allah for Al-`Afiyah in the world and in the Hereafter.”