Tradition 2.
Tradition 2.10 It is narrated from Hazrat Imam Ali Raza -asws that it is sufficient to wash-up the surface of the bowl area without any need to try to clean it from inside and Rasool Allah saw has forbidden you to talk inside lavatory and whoever talks while in lavatory he prayers will not be answered. Rasool Allah saw said if you are busy in the lavatory and someone calls you, do not answer him until you are finished using lavatory.
And Rasool Allah saw has told women to wash-up excessively (as compared with men) so that they achieve better cleanliness.
Tradition 2.11 Hazrat Imam Mohammed Baqir -asws said the reason for forbidding use of fruit bearing tree areas for lavatory purposes is that Allah -azwj has deputed angles on all fruit bearing trees in all garden, forests and wilderness around the world and when the plants and trees blossom, they are protected by angels if this measures were not at placed then all fruits and flowers would be consumed by the birds and animals.
And this is the reason why people find more peace and joy near these trees as angels are guarding them. Tradition 2.12 Istabra It is narrated from Rasool Allah saw that it is recommended to sweep (with pressure) one’s fingers from the vein connected to the bleeder to the end of urethra three times and then pour some water and recite ‘All praise is for Allah swt who has made water pure rather impure’ and then should pour twice as much water where once has drops of urine and should it repeat twice.
This is the minimum requirement that is permissible. Afterwards, he should wash-up his bottom area so that it is clean from all impurities. Similarly, ‘Istabra’ should be performed when urination is completed. If someone remembers after offering his prayers that he did not perform ‘istabra’ after urinating, it is obligatory on him to perform ‘istabra’, ablutions and then reoffer his prayers.
However, if someone forgets to wash-up after emptying his bowls, and has offered his prayers, it is not obligatory for him to wash-up and re-offer his prayers. Also one can use stone, earth to clean-up bowl area instead of using water.