Hazrat Hasan (may Allah be pleased with him) says that when a woman gives birth to a congealed clot of blood or a lump of flesh after it has been established that she was pregnant, then there is ghurrah (compensation) in it. And her 'iddah (waiting period) will be completed by this, and if she is an umm walad (a slave woman who has borne a child to her master), she will become free.