Is it obligatory to repeat the Fajr prayer that was performed at home without wudu or tayammum due to inability to walk and lack of assistance?

If a Muslim is unable to perform ablution (wudu) or dry ablution (tayammum) due to the unavailability of water or dust/earth, their prayer is valid and they are not required to repeat it, based on the Almighty’s saying: "Allah does not burden a soul beyond its scope." Scholars have deduced this from the hadith of Aisha (may Allah be pleased with her) in the Sahih, where the Companions prayed without ablution due to the absence of water, and the Prophet (peace be upon him) did not command them to repeat it. Some scholars are of the opinion that a person who lacks both means of purification should pray according to their circumstances, and is not obliged to repeat the prayer.