Muhammad bin Thwr al-Sn'any محمد بن ثور الصنعاني أبو عبد الله · The Book of Divorce

"A man came to him and said: 'I have made my wife forbidden to myself.' He said: 'You are lying, she is not forbidden to you.' Then he recited this Verse: 'O Prophet! Why do you forbid (for yourself) that which Allah has allowed to you.' (And he said): 'You have to offer the severest form of expiation: Freeing a slave.'"

"The Messenger of Allah said: 'Allah, the Mighty and Sublime, has forgiven my Ummah for what is whispered to them or what enters their minds, so long as they do not act upon it or speak of it.'"