Does touching clothes after touching very slight, imperceptible urine during istinja' make them najis?

There is no difference between a small amount of urine and a large amount, according to the majority of scholars. So, if wet urine touches a spot on the hand, and then this spot on the hand touches clothing before drying, only the part of the clothing touched by the hand becomes impure. It must be purified for prayer. If the impure spot on the garment is unknown, the entire garment must be washed. Care should be taken to avoid anything that leads to obsessive doubts (waswasa).