This situation is called in jurisprudence a limited doubt شُبهة محصورة which means that you are sure that a part within a limited parts is Najis but you don't know which one. In this case you must avoid all the parts within the known limits.
If you touch a Najis item e.g. a dog, with wetness, then your touching part of your body or cloth becomes Najis and needs to be washed with water to be Taahir. If you touch a dog or any Najis item with out wetness, then your body of cloth is not Najis.
Simply, everything is Taahir for you unless and until you know for sure that it is Najis. This is a rule in jurisprudence based on a narration of Ammar from Imam Jafar Al-Sadiq (AS) stating : Everything is ritually clean till you know that it is ritually unclean. (Wasaa'il al-Shia, V.2, Section 37 on Nijasah).
Your doubt in this matter does not make any difference. You are ritually clean because you are just doubting and not sure that your body became Najis.
Full Name and Password are required.
Please provide a valid Email address.
Please enter a valid email address.
Enter valid first name and last name with at least one space.
Mail sent successfully!
A validation e-mail has been sent to your e-mail address. You will need to follow the instructions in that message in order to gain full access to the site.