The ruling on doubt regarding the passage of urine after performing wudu'

Question:
Saif from the Noble City of Madinah. Please, my brother Saif. Saif, peace be upon you. And Allah's mercy. Peace. How are you, Shaykh? Saif, if you please, lower the television volume because there is an echo in my place; may Allah be pleased with you, lower the television and ask your question. Peace be upon you, Shaykh. I perform wudu' for prayer, and when I finish and come out, I feel that there is still some water left, and I do not know if it is the trace of urine, so I go back and perform wudu' a second time. I swear by Allah, I am a bit tired; I feel a bit weary from... Thank you, my master.

Answer:
My brother, if you have performed wudu, do not pay attention to waswas (whispers of doubt). Proceed with your prayer; it is valid and your purity is valid, and praise be to Allah. So, doubt after the act of worship does not affect the act of worship. Yes.