How should Hady due for subsequent obligations (not explicitly mentioned) be determined?
Chapter on Ransom (Fidyah) and Penalty for Hunting
Al-Mughni
Book of Hajj
Primary text
Obligations not explicitly mentioned in the text are inferred by analogy to the closest mentioned obligation. Hady for Fawat (missing a necessary rite like the Day of Sacrifice) is analogous to the Hady of Tamattu', requiring the easiest Hady, with the replacement being ten days of fasting. This is because Fawat involves abandoning a requirement of Ihram, similar to abandoning one of the two travels. This differs from Ihsar Hady's replacement, as Ihsar's replacement is established by analogy, making analogy to the primary explicit ruling preferable. The fasting for Fawat must occur after missing the Day of Arafah, unlike the recommended timing for Tamattu' fasting.
Supporting text
Hady is also inferred for abandoning any obligatory rite such as leaving the Meqat, failing to stay at Muzdalifah until sunrise, abandoning Ramy (stoning), staying overnight in Mina, or omitting the Farewell Tawaf. For these, the requirement is the easiest available Hady, and if unavailable, ten days of fasting. Furthermore, for one who invalidates their Hajj by intercourse, the required expiation is a camel, based on widespread Companion consensus, with the replacement being three days of fasting during Hajj and seven upon return, analogous to the fasting for Tamattu'.