Musnad Ahmad 22:5

Yunus ibn Muhammad narrated to us, Hammad ibn Salamah narrated to us, from ‘Amr ibn Dinar, from Ibn ‘Abbas, from al-Fadl ibn ‘Abbas: "That the Messenger of Allah (may Allah bless him and grant him peace) stood in the Ka’bah, and he glorified Allah (said SubhanAllah) and magnified Him (said Allahu Akbar), and he supplicated to Allah (the Mighty and Majestic) and sought His forgiveness, and he did not bow (ruku’) and he did not prostrate (sujud)."