Musnad Ahmad 1156:52

Waki’ narrated to us, he said: Usamah ibn Zayd narrated to us, from Muhammad ibn Qays, from his mother, from Umm Salamah, who said: The Prophet, peace and blessings of Allah be upon him, was praying in the room of Umm Salamah, and Abdullah or Umar passed in front of him. He gestured with his hand like this, she said: So he turned back. She said: Then the daughter of Umm Salamah passed by, and he gestured with his hand like this, she said: So she went on. When the Messenger of Allah, peace and blessings of Allah be upon him, finished praying, he said: "They are more persistent."