What is the method of the fidyah in Hajj, and what are the causes that lead to it?

Question:
I intend to perform Hajj this year, and I ask you, Honorable Shaykh, to kindly inform me about the method of the fidyah, and what the causes are that lead to it. May Allah reward you with good.

Answer:
The hady is obligatory for the one who performs qiran and the one who performs tamattu'. The one who performs qiran is the one who combines Hajj and 'Umrah in one ihram and one intention, and the one who performs tamattu' is the one who performed 'Umrah in the months of Hajj, then performed Hajj in the same year. These two are required to pay the fidyah. Allah the Exalted said: up to the hady, which is slaughtering a sheep, or one-seventh of a camel, or one-seventh of a cow, meaning one buys seven shares in a camel, meaning in a camel, in a cow.
As for the obligatory hady other than that of tamattu', it is what is required for committing a prohibited act among the prohibitions of ihram, such as killing game, shaving the hair, applying perfume, and others. If one commits a prohibited act among the prohibitions of ihram, this requires him to pay the fidyah. This is the detail regarding that.
Likewise, the one who leaves an obligatory act of Hajj. So, if one leaves the ihram from the miqat, having passed the miqat and entering ihram after passing it, then he owes the fidyah for leaving the obligatory act. Likewise, the one who leaves staying at 'Arafah until the setting of the sun, meaning he left before the setting of the sun and did not return, he owes the fidyah because he left an obligatory act. Likewise, the one who leaves staying overnight at Muzdalifah without a valid religious excuse, he also owes the fidyah for staying overnight at Muzdalifah, because it is an obligatory act of Hajj. Likewise, the one who leaves staying overnight in Mina during the days of Tashreeq without a valid religious excuse. Likewise, the one who leaves stoning the pillars, or one of the pillars, not stoning it, and the time has passed, then it requires him to pay the fidyah. Likewise, the one who leaves the farewell tawaf, he owes the fidyah, except for the menstruating woman, for whom there is no farewell tawaf. So, the fidyah is required either for tamattu' or qiran, or for leaving an obligatory act, or for committing a prohibited act. Yes. May Allah reward you with good, and may He do you good.