This booklet has two parts. In the first are recalled many details on the lineage of the Messenger of God (sws), and on the circumstances inherent in his birth and his breastfeeding. In the second, it is about the celebration of the anniversary of the birth of the Messenger of God (sws). It is recalled that the opinions of Muslim jurists and scholars are divided on this subject; some prohibit any celebration of the anniversary of the birth of the Messenger of God (sws), because it is, according to them, a practice invented in religion, but any innovation is a misguidance. While others allow it, seeing it as a commendable innovation that can even be a source of divine retribution. Each group invokes arguments and evidence to support its own position.