Salam maulana. Mera sawaal hai ke agar kuch najaasat mere badan pe lag jaati hai (khoon, kaafir ka gheela haath etc.) toh phir apne badan ko paak kaisa kiya jaaye?

W alikum Salam
Jis hisse me najast lagi hai usko najast ko saaf karne ke bad uspar 2 bar pak pani daal dijye wo pak ho jaega