Is it permissible to supplicate with Du'a Al-Mashloul and Du'a Kumayl?

There is no supplication in Islamic law called "Du'a al-Mashlul" (the supplication of the paralyzed). A person afflicted with paralysis can supplicate to Allah for healing using any wording, such as "O Allah, heal me from paralysis." As for Du'a Kumayl, attributed to Al-Khidr and Ali ibn Abi Talib, its story is not authentically established, and it is not among the supplications recited after prayers.