《资治通鉴·唐纪·唐纪三十》
玄宗下敕： 姨母与舅父既然服丧五个月，舅母也不能全不服，应服丧三个月，堂姨和堂舅则应服袒免丧服。 
敕： 姨舅既服小功，舅母不得全降，宜服缌麻，堂姨舅宜服袒免。 
Emperor Xuanzong issued an imperial decree: "Since aunts and uncles observe a mourning period of five months, aunts should not go entirely without mourning clothes, observing a three-month mourning period, and removed mourning clothes should be worn for paternal and maternal cousins." 