Qasim Ibn Muhammad was the eldest son of Prophet Muhammad ﷺ. He died at the age of only 3 and got buried in Jannat al Mualla in Makkah. In Arab culture, people call others by the name of their children and that’s why Prophet Muhammad ﷺ used to be called Abu al-Qasim.
Born in: 598 A.D.
Died in: 601 A.D.
Age when died: 3 years.
Death Not known!
May Allah guide us and grant us blessings in it and increase it for us Ameen