Are the words spoken when a man has intercourse with his wife forbidden, or is the intention that these words are used in insult?

Committing backbiting, calumny (slanderous tale-bearing), and obscene speech or acts is forbidden. This is based on Allah's saying: ﴿And do not backbite each other﴾ [Al-Hujurat: 12], and the Prophet's (peace be upon him) saying: "A calumniator will not enter Paradise," and "Indeed, Allah does not love obscenity or vulgarity," and "Indeed, Allah detests the obscene and foul-mouthed." The perpetrator of these forbidden acts is deserving of the threatened punishment and exposes themselves to the torment of the grave and the Hellfire, except for obscenity that occurs between spouses before or during intercourse. This is not forbidden, and they will not be punished for it, unless one or both of them disclose it to others; in that case, it becomes forbidden, as the Prophet (peace be upon him) said: "Indeed, among the worst people in rank before Allah on the Day of Resurrection is a man who goes to his wife, and she goes to him, and then he divulges her secret."