Is it permissible for a woman to uncover her face for the purpose of seeking knowledge, knowing that the Messenger of Allah, peace and blessings be upon him, said: "The اختلاف (differences) of the jurists of my Ummah is a mercy"?

The hadith "The اختلاف (disagreement/difference) of my Ummah is a mercy" is a fabricated one. It is not permissible for a woman to unveil her face in front of non-mahram men except out of necessity. The hijab of a woman is not an obstacle to seeking knowledge; rather, it is an obligation upon adult Muslim women. The statement that it is permissible for a woman to unveil her face for the sake of seeking knowledge is incorrect.