Musannaf Ibn Abi Shayba 9:861

Ibn Fudayl narrated to us, from Dawud, from al-Sha'bi, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "A woman shall not be married [at the same time] as her paternal aunt, nor as her maternal aunt. And a paternal aunt shall not be married [at the same time] as her brother's daughter, nor a maternal aunt [at the same time] as her sister's daughter. And the younger one shall not be married [at the same time] as the elder one, nor the elder one [at the same time] as the younger one."