It is narrated from Sayyiduna Abu Qatadah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) was praying while carrying his granddaughter Sayyidah Umamah bint Zaynab (may Allah be pleased with her). When he (peace and blessings be upon him) prostrated he would put her down, and when he stood up he would pick her up.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3698