Vedavyasasmriti 16

16

tretāgnisaṃgrahaśceti saṃskārāḥ ṣor̤aśa smṛtāḥ .
navaitāḥ karṇavedhāntā mantravarjjaṃ kriyāḥ striyāḥ .. 1.15 ..

and maintaining the three sacred fires—these are known as the sixteen sacraments. / For a woman, these nine rites ending with the ear-piercing ritual are without mantras; // 1.15