What is the ruling and expiation for the birth of an infant in the sixth month of pregnancy who lived for five days then died, due to negligence in taking medication to sustain it in the womb?

The negligence mentioned in the question refers to a situation where the woman was pregnant and was prescribed medication, but she neglected to take it. This led to a miscarriage without intentional abortion. Neglecting to take medicine is considered a passive means of abortion. In this case, blood money (diyah) is obligatory upon her and falls to her 'aqila (male agnatic relatives responsible for paying blood money), to be distributed among the heirs of the fetus, with no share for her. Similarly, expiation (kaffarah (definition)) is also obligatory, according to the preponderant opinion. The blood money here is full because she aborted the fetus while it was alive and had reached a stage where it could have lived.