Whether you can tongue kiss your wife while fasting depends on whether you are confident that it will not lead to climax.
According to religious guidance, the permissibility of kissing and being intimate with one's spouse during fasting hinges on the ability to control oneself and avoid reaching climax.
- Permissible: If you are sure that tongue kissing will not lead to climax.
- Not Permissible: If there is a risk of reaching climax, then it is not permissible.
It is permissible to kiss and play with one's wife, if one is sure that there is no risk of reaching climax.
The intention behind this guidance is to maintain the integrity of the fast, which involves self-restraint.