However, there are a few ways you can comfort your husband after a parent passes away, even if you've never dealt with this in your own life. Families.com recommends letting your spouse talk through his feelings. He'll likely have a lot to say following the death, and lending an ear can go a long way.
Try to let go of the feeling that you need to "fix" a problem and eliminate the grief altogether - Hitched magazine states that your attempts will be unsuccessful. Grieving is a process, and making an effort to give your loved one a shoulder to cry on can be enough.
When your spouse is ready, you might want to consider encouraging him to speak to a clairvoyant to connect with his loved one on the other side. A live psychic reading can give him closure and let him know that his parent is content in the afterlife.