If a Man Dies While Married to a Slave Woman and She Is Freed After His Death, What Is the Ruling?

Ibrahim (may Allah have mercy on him) said that if the husband of a slave woman passes away and then she is set free, she will observe the waiting period (iddah) prescribed for a slave woman.

Hazrat Sha'bi (may Allah have mercy on him) says that if a slave woman’s husband passes away and then she is also set free while she is in her waiting period ('iddah), she will complete four months and ten days.