There's no explicit ruling in Islam that prohibits fake nails entirely. However, the main concern is that they hinder the Wudu process, which is the ritual cleansing required before prayer.
- Wudu involves washing specific parts of the body, including the hands and nails. Fake nails can prevent water from reaching the actual nails, thus invalidating the Wudu.
- Scholars generally agree that if a Muslim woman performs Wudu with fake nails on, her subsequent prayers would be invalid.
- If you need to wear fake nails permanently because of a medical condition or other reasons, there is no issue, as long as you remove them before performing Wudu.
Therefore, while fake nails themselves are not prohibited, it is important to consider their impact on religious practices like Wudu and prayer.