As salaam wa alaikum, My husband never uses running water for taharah be it stool or urine he just uses wet tissue. Does this way of cleaning make him paak to read salaah or does he need to make ghusal
By doing istinja only with tissue, the taharah shall not be achieved. However since the minor nijasah is forgivable hence salah is valid.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband