Zaid Alsalami, Shaykh Dr Zaid Alsalami is an Iraqi born scholar, raised in Australia. He obtained a BA from Al-Mustafa University, Qom, and an MA from the Islamic College in London. He also obtained a PhD from... Answered 1 year ago
Bismihi ta'ala
If you mean on surface of body, yes, it needs to be purified, but if you mean inside body, like you swallowed dog's saliva, then nothing needs to be done.
And Allah knows best