Ruling on killing foreigners in Muslim lands

Will he bear the burden of his children’s and grandchildren’s sins if they go astray from Islam in a non-Muslim country?

Should she travel and leave her sister who cannot take good care of herself?

She is living in a non-Muslim country where she is afraid to wear Islamic dress and seek Islamic knowledge

Does he have to migrate from an area where a lot of sin is committed, even though he works there?

He wants to migrate, fleeing for the sake of his religious commitment from temptation, but his father will not let him

Is it permissible for her to study in a mixed environment in a non-Muslim country?

Ruling on a Muslim travelling to the land of disbelief to settle and reside there

She wants to leave the land of disbelief and go back to her family, but they refused to let her do so. What should she do?

Do the teachings of the Prophets differ with regard to the prescription of fighting?