Abdur Rahman bin 'Amr al-Awza'i عبد الرحمن بن عمرو أبو عمرو الأوزاعي · The Book of Eclipses

"While I was (practicing) shooting some arrows in Al-Madinah, the sun became eclipsed. I gathered up my arrows and said: 'I want to see what the Messenger of Allah (ﷺ) will say about the eclipse of the sun.' So I came to him from behind when he was in the masjid, and he started to say the tasbih and takbir and to supplicate until the eclipse was over. Then he stood up and prayed two rak'ahs with four prostrations."

"We were sitting with the Prophet (ﷺ) when the sun became eclipsed. He leapt up, dragging his garment and prayed two rak'ahs until the eclipse was over."

The Prophet (ﷺ) prayed when there was an eclipse. He recited then he bowed, then he recited then he bowed, then he recited then he bowed, then he recited then he bowed, then he prostrated, and he did the second rak'ahs in same fashion.