ANSWER:

Your prayer is valid as it is not a layer but rather a color with no mass. 

 

Sheikh yesterday i went to the fingerprint office they take my fingerprints but the ink doesn’t go and i pray duhr with the ink on my thumb during wudu i try my best to remove but it does not go so i did wudu and pray duhr is my prayer valid

Ablution (Wudhu), Prayer |