Sayyiduna Abu Qatadah (may Allah be pleased with him) said: I saw the Messenger of Allah (peace and blessings be upon him) praying, and with him (peace and blessings be upon him) was his (peace and blessings be upon him) granddaughter Umaymah (or Umamah) bint Abi al-As, whom he (peace and blessings be upon him) would pick up when he stood and put down when he sat, until he completed his prayer.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19280