Who was the eldest daughter of Hazrat Muhammad (PBUH)?

Who was the eldest daughter of Hazrat Muhammad (PBUH)?

حضرت محمد صلی اللہ علیہ وسلم کی سب سے بڑی بیٹی کون تھی؟
Explanation
Hazrat Zainab was the first and youngest daughter of Hazrat Muhammad ﷺ and Hazrat Khadijah
She married her maternal cousin, Abu al-As ibn al-Rabi'
She had two children "Ali and Umamah"

She died at the age of  30 (AH 7)and was buried in Jannat al Mualla in Makkah.



Additional Information:


Prophet Muhammad ﷺ 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).