If there is a sick person who prays while sitting, what is the ruling regarding the Sunnah for him?

Question:
If there is a sick person who prays while sitting, what is the ruling regarding the Sunnah for him?

Answer:
The sick person who prays while sitting has been excused by Allah, as He the Exalted said: and as the Messenger (peace and blessings be upon him) said: "The sick person prays standing; if he cannot, then sitting; if he cannot, then on his side." He prays the obligatory prayer sitting, and the voluntary prayers are the same. Leave the voluntary prayers while sitting. Leave the regular voluntary prayers attached to the obligatory ones, whether they are before or after; leave them while sitting. If it is permissible to pray the obligatory prayer in that state, then it is even more permissible to do so in the voluntary prayer, meaning that standing is not a condition for the voluntary prayer, even for the healthy person. Yes. Praise be to Allah. May Allah reward you with good and do you good.