Except those who are (really) weak and oppressed - men, women, and children - who have no means in their power, nor (a guide-post) to their way. (4:98)

There is no blame on those who are infirm, or ill, or who find no resources to spend (on the cause), if they are sincere (in duty) to God and His Apostle: no ground (of complaint) can there be against such as do right: and God is Oft-forgiving, Most Merciful. (9:91)