Is it true that whoever perfects his wudu' has his sins forgiven, and that the sins come out with the drops of water?

Question:
He says: I heard that whoever perfects his wudu', Allah forgives his sins, and that the sins come out with the drops of water that come out from his fingernails. Is this correct? And what is the correct and good way to attain this great reward, if the hadith is authentic in that regard? May Allah reward you with good.

Answer:
In the name of Allah, the Most Gracious, the Most Merciful. Praise be to Allah, Lord of the worlds. May Allah send prayers and blessings upon our Prophet Muhammad, and upon his family and all his Companions. As for what follows, it is established in the hadiths that wudu' has a great virtue, and that sins come out from the limbs with the water, or with the last drop of water. This is because wudu' is a great act of worship and obedience to Allah (Glorified and Exalted is He), and because it is a prerequisite for prayer, being one of the conditions of prayer and other acts of worship for which wudu' is prescribed. This reward is established by intention. Yes.
If a person intends with his wudu' to draw near to Allah and to obey Allah (Glorified and Exalted is He), the reward is recorded for him. Praise be to Allah.
But on the condition that he perfects the wudu' as Allah (Glorified and Exalted is He) commanded, meaning that he completes it and performs it in the prescribed manner. This reward is established by these two conditions: first, the intention and seeking this reward, and second, that he performs the wudu' that Allah the Exalted commanded, by perfecting it on the limbs such that nothing remains of the limbs to which the water did not reach. Yes.