Abu Ja’far Ibne Jarir Tabari has narrated through his authorities from Muhammad bin Naufal Abdi that he said: A hunter had snared a doe and he was carrying her away when Imam Hasan (a) saw this animal and remarked: She is pregnant with two female kids one of which has a defective eye.
When the hunter heard this, in order to test the veracity of the Imam, he slaughtered the female deer to find that she was indeed carrying two female kids: and one had a defective eye.
Dalailul Imamah, Pg. 67; Ithbatul Huda, Vol. 2, Pg. 563.