Permissibility of someone who has many Kaffarahs sharing fasting with others

Q: About fourteen years ago a person was involved in a car accident that resulted in the death of nine people. The accident happened when the concerned man's taxi clashed with a large parked car that was located on the main road between Dammam and Riyadh. Two other cars immediately (Part No. 21; Page No. 297) hit against the two sides of the taxi. The taxi driver went in a coma for four months, and different parts of his body were broken, especially his right leg that makes him still limp though he tried to treat it locally and abroad. The concerned man would like to know the Kaffarah (expiation) that he has to make by observing Sawm (Fast) etc. He mentions that he started Sawm this year in the month of Safar as a precautionary act. He asks whether it is permissible for his family members or others to help him with observing the Sawm of Kaffarah. He needs your answer urgently and says that the Traffic department decided at the time of the accident that the concerned man's mistake was responsible for the accident at the rate of 50%. We hope that your Eminence will issue a Fatwa in this regard. May Allah keep and help you. May Allah grant us sincerity to do righteous deeds only in His cause.

A: If the matter is exactly as what is mentioned, it will be obligatory (Wajib) on you to make nine Kaffarahs (expiations). Such Kaffarahs are to free nine slaves or, if you are unable to do so, to observe Sawm for two successive months for each one of the deceased. It is impermissible for anyone else to observe Sawm on your behalf as long as you are alive.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.