Imaam al-Barbahaaree (rahima-hullaah) mentions:

((From the Sunnah is that you do not help anyone in disobedience to Allaah, whether they be parents or any of the creation. There is no obedience to a human in disobedience to Allaah and no one is to be loved for that (i.e. disobedience to Allaah).

Rather, all of that is to be hated for (the sake of) Allaah, the Blessed and Most High)).

Sharhus-Sunnah - Imaam al-Barbahaaree

Ref: Fatwa-Online

al-Imaam Yoosuf ibn Abdil-Barr said:

"The first step towards (seeking) knowledge is the (sincerity of) intention, then it is.."

Ref: The first step towards seeking knowledge is sincerity of intention