Tajweed RulesIf any letter other than ba and mim follows the sakinah mim, the mim must be pronounced with a clear labial idhhar, without ghunnah. The greatest care against concealing it must be taken before the letters fa and waw.
أَلَمْ نَشْرَحْ — عَلَيْهِمْ غَيْرِ — هُمْ فِيهَاSource:تحفة الأطفال

