Is the intended meaning in the statement regarding the sick person's prayer permissibility or the negation of prohibition?

Question : Here it says, "And for the sick person's prayer, the lam indicates permissibility." So, is the intended meaning that it is permissible for the sick person to pray lying down if a Muslim doctor tells him, "Your prayer in any manner other than this will harm you"?

Answer : Or do we say that this is a negation of prohibition, meaning it is not prohibited, and thus this sick person is commanded to pray lying down, either on the basis of obligation or on the basis of recommendation? Is the intended meaning the first or the second? The intended meaning is the second.