Musnad Ahmad 25:1639

Rawh ibn ‘Ubadah narrated to us, Hisham narrated to us, he said: Qays ibn Sa‘d informed us, from ‘Ata’, from Ibn ‘Abbas: That the Prophet of Allah, may Allah bless him and grant him peace, used to, when he raised his head from bowing, say: "O Allah, our Lord, to You is the praise, filling the heavens and filling the earth, and filling whatever You will of anything after that."