(may Allah be merciful to him) says in his poem known as Al-Nuniyyah:
Do not follow the Rafidah sect,they believe that feet should be wiped in Wudu`They misinterpret an abrogated reading by another,although both are revealedOne was revealed to abrogate the other,but both are recorded in reportsThe Prophet and his Companions washed their feet,and this fact is indisputableThe brilliant Sunnahmay qualify the Qur'an
What is the abrogated reading?
Washing the feet in Wudu' (ablution) is authentically proven in the Qur'an and Sunnah (whatever is reported from the Prophet). (Part No. 4; Page No. 90) There is no Naskh (abrogation) related to this issue. Allah (Exalted be He) says in Surah Al-Ma'idah:
O you who believe! When you intend to offer As-Salât (the prayer), wash your faces and your hands (forearms) up to the elbows, rub (by passing wet hands over) your heads, and (wash) your feet up to ankles.
We do not know of any Nasikh and Mansukh (abrogating and abrogated texts) regarding the obligation of washing the feet. If the poet refers to Allah's Saying:
...and (wash) your feet
in a genitive form thinking that it was abrogated, he is mistaken. The two ways of recitation in the genitive and accusative forms have been recurrently and decisively related. There is no doubt about the recitation using the accusative form. As for the genitive form, the soundest opinion is that the word is in the genitive form because it is preceded by Allah's Saying:
(by passing wet hands over) your heads
which is in the accusative form as well for the sake of linguistic harmony. Linguists state that this style is acceptable, as the Arabs used it in their poetry and prose. For more information, refer to grammar books.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.