A man and his wife covering their baby with a blanket and the baby dying as a result
If you did not put the bedspread and the blanket or any of them over the face of the baby, and she was overwhelmed by them due to her own movement, there would be nothing on you because you were not negligent. However, if you put the bedspread and the blanket over her face, both of you must
offer the Kaffarah (expiation) of involuntary manslaughter. This is because you were the reason behind her death. Kaffarah is freeing one believing slave by each one of you, (Part No. 21; Page No. 389) and if there are none available, you must fast two consecutive months and sincerely repent to Allah. We ask Allah to compensate you with a girl better than her and help you fulfill your duties.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.