2:10In their hearts is sickness, and God has increased their sickness. They will have a painful punishment because of their denial.

2:184For a specified number of days. But whoever among you is sick, or on a journey, then a number of other days. For those who are able: a ransom of feeding a needy person. But whoever volunteers goodness, it is better for him. But to fast is best for you, if you only knew.

2:185Ramadan is the month in which the Quran was revealed. Guidance for humanity, and clear portents of guidance, and the Criterion. Whoever of you witnesses the month, shall fast it. But whoever is sick, or on a journey, then a number of other days. God desires ease for you, and does not desire hardship for you, that you may complete the number, and celebrate God for having guided you, so that you may be thankful.

2:196And carry out the Hajj and the Umrah for God. But if you are prevented, then whatever is feasible of offerings. And do not shave your heads until the offering has reached its destination. Whoever of you is sick, or has an injury of the head, then redemption of fasting, or charity, or worship. When you are secure: whoever continues the Umrah until the Hajj, then whatever is feasible of offering. But if he lacks the means, then fasting for three days during the Hajj and seven when you have returned, making ten in all. This is for he whose household is not present at the Sacred Mosque. And remain conscious of God, and know that God is stern in retribution.