Is it obligatory to be cautious and repeat the prayer if kudra (turbid discharge) comes down intermittently and dry spots of it are discovered after prayer, without it flowing onto the limbs?

This turbid discharge is impure and invalidates ablution. It necessitates Istinja (washing of private parts) and taking precautions to prevent the impurity from spreading to clothes. It also requires performing ablution for every prayer after its time has begun, according to the majority of scholars. The Maliki school of thought is more lenient in these matters, as they do not necessitate removing the impurity or performing ablution for every prayer if its discharge lasts for more than half of the prayer's time. It is preferable for someone who suffers from obsessive doubts (waswas) to adopt the Maliki view to avoid hardship.