at my office impure water is coming. for istibra I took a bottle of with me in washroom, so after performing istebra, I cleaned my penis with water and after a minute I got a doubt that if I have jerked the penis 3 times or not.so then I have jerked the penis 3 times, but there was no water in bottle. so was the istebra successful. or if any liquid comes after this will it be najis? was my istebra not valid ?

agar aap roz sahi istebra karte the to sirf shak ki wajah se dobara jerk ki zarurat nahi thi,agar aapko yaqeen tha ki jerk nahi kia to aapka istebra abhi pura nahi hua aur after jerk kuch liquid nikla to aap najis hain,phir se wash karna hoga, office me pipe ke pani ko aap impure kyun samajhte hain?agar wo tunki se aata jo ek kur se zyada hai to wo to paak hi hai