There is no requirement to purify oneself after touching a dog in Islam. Dogs are considered najis (impure) in Islam, but this impurity does not transfer to humans through touch.
However, there are some guidelines regarding dogs in Islam:
- Eating: It is forbidden to eat dog meat.
- Praying: It is not permissible to pray while a dog is present.
- Touching: While touching a dog does not require purification, it is generally advisable to avoid unnecessary contact with dogs.
The concept of najis in Islam primarily applies to certain substances and objects, not to animals themselves. Therefore, touching a dog does not necessitate any specific purification rituals.