From Sahih Muslim (Hadith 2112):
Ibn 'Abbas reported:The Apostle of Allah (ﷺ) observed prayer while it was (solar) eclipse. He recited (the Qur'an in qiyam) and then bowed. He again recited and again bowed. He again recited and again bowed and again recited and again bowed, and then prostrated; and the second (rak'ah) was like this
Reference: Muslim 2112