if i want to take knowledge for the sake of something not directly related to islam is it better to take the knowledge from a kafir or a muslim who you dont know the Aqedah of or he has a bad aqedah? because at least with the kafir you know everything is falsehood.

Ustadh AbdulAziz al-Haqqan

This did not make sense to me. If you mean worldly things, then take it from those that are knowledgeable and competent as long as it does not negatively affect your deen.