Mukhtasar Bukhari

Narrated from Sayyiduna Abu Qatadah Ansari (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) used to pray, and while in that state, he would carry Umamah bint Zaynab bint Rasulullah (peace and blessings of Allah be upon him), the daughter of Abu al-As bin Rabi’ah bin Abd Shams. Then, when he would go into prostration, he would put her down, and when he stood up, he would pick her up. (Sayyidah Zaynab (may Allah be pleased with her) was the daughter of the Messenger of Allah (peace and blessings of Allah be upon him), Umamah was his granddaughter, and Abu al-As was his son-in-law.)