Is the prescribed punishment (Hadd) for slander applicable to one who slanders outside the abode of Islam (Dar al-Islam)?

Primary text

The prescribed punishment for slander is obligatory upon the slanderer even if the slander occurs outside the abode of Islam. This position is held by Al-Shafi'i. The evidence for this is the general nature of the Quranic statement: "And those who accuse chaste women..." (Quran 24:4). Furthermore, the slanderer is a responsible, adult Muslim who has slandered a chaste person, thus resembling one within the abode of Islam.