Question:

If dry ink remains on the nails whilst performing wudu and remains unnoticed, is it still valid?

Answer:

If the ink is dry on the nails of a writer and he did not notice it whilst performing wudu and went on to offer prayer, then according to Imam Ahmed Rida, the wudu will be valid.

And Allah ﷻ knows the best

Imam Ahmad Rida Khan رحمة الله تعالى عليه

Translation by Dr Musharraf Hussain Al-Azhari Translator of Majestic Quran, www.majesticquran.co.uk