Musnad Ahmad 1007:135

Waki’ narrated to us, from Abu al-Umays, ‘Amir ibn ‘Abd Allah ibn al-Zubayr narrated to us, from al-Zuraqi—who is called ‘Amr ibn Sulaym—from Abu Qatadah, that the Prophet (may Allah bless him and grant him peace) used to pray while his daughter was upon his shoulder. And he said once: He would carry Umamah while he was praying. When he wanted to bow or prostrate, he would place her down, and when he stood up, he would take her back.