The longest surah in Juz Amma (the 30th part of the Quran) is Surah An-Naba (Surah 78), which comprises 40 verses. This surah is often among the first longer surahs memorized due to its significance and frequent recitation.

Surah An-Naba discusses the themes of resurrection, accountability, and the Day of Judgment. Its rhythmic style and repetition of key messages make it engaging for quran memorization. Learners often focus on smaller sections of 5-10 verses at a time, revising daily to build fluency. Understanding its meaning deepens the connection to the verses, aiding in memorization and spiritual growth.