Hadith.2731 - Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said: "Whatever you step on or your camel steps on while you are in the state of ihram, you must pay its expiation."
If a person in the state of ihram kills game, they must pay the compensation and give the game as charity to a needy person. However, if they intentionally kill another animal after the first, there is no expiation for it, and they are among those whom Allah سبحانه وتعالى will punish. This punishment is reserved for the Hereafter, as Allah سبحانه وتعالى says: 'Allah سبحانه وتعالى has pardoned what is past; but if anyone repeats it, Allah سبحانه وتعالى will take vengeance on him' (Surah Al-Ma'idah 5:95). If they unintentionally kill game again, they must pay expiation every time they repeat it.
For anything a person in the state of ihram does out of ignorance, there is no penalty upon them, except for killing game, for which expiation is required. If it is done intentionally, they must pay the expiation and bear the sin as well.
There is no harm in a person in the state of ihram catching fish, eating it fresh or salted, or taking it as provision. If they kill a locust, they must give a date as expiation, as a date is better than a locust. If the locusts are many, they must sacrifice a sheep.
