Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates from the Messenger of Allah (peace and blessings be upon him) that he (peace and blessings be upon him) said: "A paternal aunt and her niece, or a maternal aunt and her niece, are not to be combined in one marriage."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13944