The exemption of those who are weak due to illness or
advanced age from offering the Obligatory Prayers and from fasting is explained
in Questions and Answers. Bahá’u’lláh indicates that in “time of ill-health it
is not permissible to observe these obligations” (Q and A 93). He defines old
age, in this context, as being from seventy (Q and A 74). In answer to a
question, Shoghi Effendi has clarified that people who attain the age of
seventy are exempt, whether or not they are weak.
- The Universal House of
Justice (‘The Notes section of the Kitab-i-Aqdas’)