there is no blame on those who are infirm or ill or who find no resources to spend if they are sincere to allah and his messenger no ground can there be against such as do right and allah is oftforgiving most merciful.
ليس على الضعفاء ولا على المرضى ولا على الذين لا يجدون ما ينفقون حرج إذا نصحوا لله ورسوله ما على المحسنين من سبيل والله غفور رحيم