good question... a true brother/sister. is the one you can truelly trust
i'll tell you right now i believe 100% that i can giv £100000 to my best friend who (Alhamdullilah) is a good muslim and i kno he will giv it bak! same wiv my own blood! a true muslim will see money as nothing.... well i do neway
a true muslim only thinks about how to benefit others for rewards in the akhirah!
hope that answers the question and btw... i have loads of these brothers/sisters ALHAMDULLILAH!!! praise truelly belongs to Allah!
i have 2 sister in islam i think one is my sister and the other is my couisn i think they do the same for me as themselves , i met alot of people but noo one i could add to them