Al-Qāsim ibn Muḥammad (Arabic: القاسم بن محمد) was the eldest of the sons of Muhammad and Khadija bint Khuwaylid. He died in 601 CE (before the declaration of his father's prophethood in 609), after his third birthday, and is buried in Jannat al-Mu'alla cemetery, Mecca. Ibn Majah mentioned that he died before completing his milk age.
Siblings
Abd Allah ibn Muhammad
Ibrahim ibn Muhammad
Zainab bint Muhammad
Ruqayya bint Muhammad
Umm Kulthum bint Muhammad
Fatima al-Zahra