Does Allah accept my unintentionally imperfect worship?

I’m worried about my wudu. Is it invalidated if a small part of my foot remained dry by mistake?

A Muslim’s intention is more valuable than his deed

"The reward of deeds depends upon the intentions and every person will get the reward according to what he has intended.” (Bukhari; 1; 1)

It is reported from Ibn'Abbas (RA) that the Prophet (SAW) said:

"Verily, Allah (SWT) has forgiven my Ummah for their (unintentional) mistakes and their forgetfulness and that which they do under duress."  Ibn Majah)

Referring to the hadiths above, we can say that our mistakes that we make unintentionally do not invalidate our worship. Our duty is to struggle to perform our deeds in accordance with the principles our Blessed Prophet (pbuh) taught us and to perform them just for the sake of Allah (swt). To accept and reward our deeds are upto Allah (swt) who rewards the deeds with His infinite mercy, grace and generosity. We believe that the mercy and just of Allah (swt) will pardon our unintentional faults and accept and reward our imperfect worship with His eternal compassion.

To commit sin and make mistakes is an inevitable consequence of being “human”. What we should do is to make “tawba” immediately.  Our Prophet (pbuh) states that:

“Every human commits sin. The best of sinners are those who repent (turn back from their mistakes regretfully)." (Tirmidhi)

In his following hadith, he states what a great mercy Our Lord has:

“By Him in Whose Hand is my life, if you were not to commit sin, Allah would sweep you out of existence and He would replace (you by) those people who would commit sin and seek forgiveness from Allah, and He would have pardoned them.” (Muslim, vol. 4, Book 37, Hadith No. 6622 & 6621)

So, what is more hazardous than sins and imperfect worship is “not feeling regret and not making repentance (tawba).

Besides;

“For a Muslim who is in in trouble with waswasa (misgivings of shaytan), if he is doubt with his wudu during or after performing it, he doesn’t have to rewash it. His wudu is accepted. (Great Islamic Jurisprudence, Omar Nasuhi Bilmen; Jurisprudence for Shafee, Halil Gonenc)

“A person who is in trouble with waswasa shouldn’t pay attention to waswasa (misgivings of satan). He should believe that his doubts, hesitations and thoughts are inaccurate and just whispers of satan. Besides, he should recite surah al Nas and al- Falaq.” (Turkish Religious Affairs)