The ruling on one whose wife died in a car accident

Question:
One of the brothers says: He has a relative who traveled on a land road, and an accident occurred. This accident resulted in the death of the wife. Is he obligated to fast or not?

Answer:
This requires detail, as accidents involve details:
If he contributed to it, he is obligated to pay the expiation; because due to his haste and not driving in the usual manner, or sleeping, or other causes, he is obligated to provide compensation, and the expiation is upon him.
As for if it was in a manner without negligence, or if someone else transgressed against him—he did not transgress, someone else transgressed against him—then the one who transgressed is the one who provides compensation. Or if he was walking in the usual manner, but the camel ran off, and the camel was sound, with no fault in it, the camel was controlled, and it ran off while he was walking in the usual manner, then he owes nothing in this. For example: if he and his companion were on a mount, and the mount shied or started while they were walking in the usual manner, he owes nothing.
And this is referred back to traffic control and the recording of accidents: how did the accident happen? Then to the courts; this is referred back to what those in charge of traffic recorded and attended to, and then what pertains to the court.
So the result is that a person must be cautious, stay away from causes of danger, and avoid haste. He must be careful and cautious and not be lax in these matters. He must be at the utmost level of caution and beware of haste. Haste, lack of deliberation, and lack of stopping are what most often befall people. One may also be affected by drowsiness; if he has stayed up late, drowsiness may overtake him, and he may harm himself and those with him. It may also be due to taking some narcotics or intoxicants, and this person is also liable for compensation and a criminal. The point is: he must be cautious of the causes of accidents.