Tajweed RulesThat an incidental sukun follows a letter of madd due to pausing at the end of the word; its ruling is permissibility, and shortening, medium length, or full length are all permitted, though it is preferable to adhere to a single way consistently.
الْعَالَمِينَ — الرَّحِيمِ — نَسْتَعِينُSource:تحفة الأطفال

