A maternal half-sister marrying a paternal half-brother

Q 1: `Uwayd has a maternal half-sister and a paternal half-brother. Is it permissible for the maternal half-sister to marry the paternal half-brother?

(Part No. 18; Page No. 335)  A: If the reality is as you mentioned, it is permissible for `Uwayd's paternal half-brother to marry the maternal half-sister unless there exists a hindrance by means of consanguinity, foster relations or affinity whereby the marriage will be prohibited. `Uwayd being a half-brother to them on the parents' side does not prohibit the marriage. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.