Is it permissible for Ahmed to marry Majid's sister if Ahmed and Majid are sons of paternal uncles and were suckled by Ahmed's father's wife (who is not Ahmed's mother)?

Ahmad is permitted to marry Majed's sister because she was not suckled by Ahmad's father's wife. The one suckled was Majed, and he is a foster-brother to the daughters of Ahmad's father through suckling, and it is not permissible for him to marry them. As for Ahmad, he is permitted to marry Majed's sisters unless there is another impediment.