Musannaf Ibn Abi Shayba 3:1998

Ibn ‘Ulayyah narrated to us, from Sa‘id ibn Abi ‘Arubah, from Qatadah, that he used to say when he recited [the verse of] As-Sajdah: "Subhana Rabbina, in kana wa‘du Rabbina la-maf‘ula. Subhanallahi wa bihamdihi, Subhanallahi wa bihamdihi," three times.