Who was the first son of Hazrat Muhammad(PBHU)?

Who was the first son of Hazrat Muhammad(PBHU)?

حضرت محمد صلی اللہ علیہ وسلم کا پہلا بیٹا کون تھا؟
Explanation

Hazrat Qasim was the first (elder) son of Hazrat Muhammad ﷺ and Hazrat Khadijah

He died at the age of only 3 and was buried in Jannat al Mualla in Makkah.


Additional Information:

Prophet Muhammad  had three sons and four daughters.

1. Hazrat Qasim 
2. Hazrat Zainab (RA)
3. Hazrat Ruqayyah (RA) 
4. Hazrat Umm Kulthum (RA) 
5. Hazrat Fatima (RA) 
6. Hazrat Abdullah
7. Hazrat Ibrahim 

All of his children were born to Hazrat Khadijah (RA) except one son Ibrahim, who was born to Hazrat Maria al-Qibtiyah (RA).