"The Sunni Ibn Kathir explains that the allowance of taking unbelievers as friends for the purpose of “guarding yourselves against them” was for “those believers who in some areas or times fear for their safety from the disbelievers. In this case, such believers are allowed to show friendship to the disbelievers outwardly, but never inwardly. For instance, Al-Bukhari recorded that Abu Ad-Darda’ said, ‘We smile in the face of some people although our hearts curse them.’ Al-Bukhari said that Al-Hasan said, ‘The Tuqyah [taqiyyah ] is allowed until the Day of Resurrection.’”"