...so that they may learn about the religion of Allah, so that Allah’s call will spread among His servants….In summary, those who come from a land at… - Ibn Kathir

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.’”

Abu Dawud At-Tayalisi recorded that Ibn `Abbas said, "Sawdah feared that the Messenger of Allah might divorce her and she said, `O Messenger of Allah! Do not divorce me; give my day to `A'ishah.' And he did, and later on Allah sent down,And if a woman fears cruelty or desertion on her husband's part, there is no sin on them both." Ibn `Abbas said, "Whatever (legal agreement) the spouses mutually agree to is allowed." At-Tirmidhi recorded it and said, "Hasan Gharib." In the Two Sahihs, it is recorded that `A'ishah said that when Sawdah bint Zam`ah became old, she forfeited her day to `A'ishah, and the Prophet used to spend Sawdah's night with `A'ishah. There is a similar narration also collected by Al-Bukhari. Al-Bukhari also recorded that `A'ishah commented: And if a woman fears cruelty or desertion on her husband's part, that it refers to, "A man who is married to an old woman, and he does not desire her and wants to divorce her. So she says, `I forfeit my right on you.' So this Ayah was revealed."

Ibn Kathir (Commenting on Quran 2:256 in the unabridged version of his tafsir) - "Therefore all people of the world should be called to Islam. If anyone of them refuses to do so, or refuses to pay the jizya, they should be fought till they are killed."