This refers to being free of disease that stops one from performing the Ḥajj. Good health is a condition of obligation (wujūb), as stated by the author of al-Baḥr. This is the ẓahir ar-riwāyah from Abū Ḥanīfa and a narration from the Ṣahibayn. It is also the madhhab of Mālik. Therefore, Ḥajj is not obligatory upon the blind, the crippled, the paralysed, the senile, the one with amputated legs, the sick, and the elderly who cannot stay on a mount.The second view is that it is a condition for the performance (adāʾ) of Ḥajj, as determined by Qāḍī Khān and chosen by many Mashāyikh, including Ibn al-Humām. It is the ẓahir ar-riwāyah from the Ṣaḥibayn and the narration of al-Ḥasan from Abū Ḥanīfa. It is also the madhhab of the Shāfiʾīs and the Ḥanbalīs. See: al-Badāʿiʾ 2:121, al-Maslak pp. 56-57, Radd al-Muḥtār 458:2, and al-Ḥajj wa al-ʿUmrah, p. 24.This difference is regarding those who own the required wealth but are unwell. As for someone who had the means when he was healthy, then they became too sick to perform Ḥajj, all agree that Ḥajj remains obligatory from their wealth. In this case, they must either perform Ḥajj immediately or leave a bequest (waṣiyyah). See: Lubāb al-Manāsik, p. 58, and others.