It is narrated from the Mother of the Believers, Sayyidah Aishah (may Allah be pleased with her), that the Messenger of Allah (peace and blessings be upon him) said "something similar to that".
No one narrated these hadiths from Umar bin Sa'id (may Allah have mercy on him) except Ibrahim bin Tahman (may Allah have mercy on him), and Ahmad bin Hafs (may Allah have mercy on him) is alone in narrating them.