According to Madhhab:
If a lamb is 5 months and 2 weeks old and it looks bigger or is equivalent to a one year old sheep, then can it be slaughtered for Qurbani?
What is the ruling for sheep regarding Qurbani?
A sheep has to be one-year-old for its Qurbānī to be valid. However, if it is six months old but appears to be one-year-old when left among the one-year sheep, its Qurbānī will also be valid. If the sheep doesn’t meet these requirements (as in your enquired case), its Qurbānī will not be valid.
AND ALLAH TAÁALA ALONE IN HIS INFINITE KNOWLEDGE KNOWS BEST
ANSWERED BY: Sohel Randera
CHECKED AND APPROVED BY: Mufti Muhammed Saeed Motara Saheb D.B.
Islamic Date:2 Muharram 1440
English Date: 12 September 2018