Re: Facts about Agakhanis by a former Ismaili
I don't know when Al Abbas radhiAllahuanhu accepted Islam, Allah knows best as to the date. But I do know that after this incident he worked as a spy for the muslims and went back to Makkah. Al Abbas was the first person to tell the Prophet salAllahualaihiwasallam that Quraish were getting ready to attack and then Uhud took place.