Musannaf Ibn Abi Shaybah

Hazrat Umar says that urine should be washed twice.

Ibrahim (regarding the person whose urine gets on his thighs or shins) says that he should clean it with water.

Hazrat Saeed bin Al-Musayyib says that sprinkling is to be compensated with sprinkling, and pouring is to be compensated with pouring.

Ibrahim says that urine will be cleaned once or twice.