The preservation of the Quran is a fascinating topic, and I’d be happy to explain the methods traditionally understood to have ensured its accurate transmission over time.

The Quran, regarded by Muslims as the literal word of God revealed to the Prophet Muhammad, has been preserved through a combination of oral and written methods. Here’s an overview of the key methods:

1. **Oral Transmission and Memorization**:
– From the time of its revelation in the 7th century, the Quran was memorized by the Prophet Muhammad and his companions. This was critical in an Arabian society where oral tradition was a primary means of preserving knowledge.
– The practice of *hafiz* (those who memorize the Quran in its entirety) began early and continues today, with millions of people across generations committing it to memory.
– The Quran’s rhythmic and poetic structure, along with its recitation rules (*tajwid*), aided in accurate memorization and detection of errors if someone misrecited.

2. **Early Written Records**:
– During the Prophet’s lifetime, verses were written down by scribes (e.g., Zayd ibn Thabit) on materials like parchment, bones, and palm leaves as they were revealed. These were not yet compiled into a single book but served as a reference alongside memorization.
– The Prophet reportedly reviewed the entire Quran with the Angel Gabriel annually, ensuring its accuracy.

3. **Compilation Under Abu Bakr**:
– After the Prophet’s death in 632 CE, the first caliph, Abu Bakr, ordered the compilation of the Quran into a single manuscript. This was prompted by the deaths of many memorizers in the Battle of Yamama, raising concerns about potential loss.
– Zayd ibn Thabit led this effort, collecting written fragments and cross-checking them with those who had memorized the text. The result was a complete written copy, kept by Abu Bakr and later passed to the second caliph, Umar, and then his daughter Hafsa.

4. **Standardization Under Uthman**:
– About 20 years after the Prophet’s death, during the caliphate of Uthman (circa 650 CE), variations in recitation and dialect among Muslims prompted further standardization.
– Uthman commissioned a team (again led by Zayd ibn Thabit) to produce a definitive written copy in the Qurayshi dialect, the dialect of the Prophet. Copies were made and sent to major Islamic cities, and other variant manuscripts were ordered to be destroyed to prevent confusion.
– This *Uthmanic codex* became the basis for the Quran as it exists today.

5. **Continuous Chain of Transmission**:
– The Quran’s preservation is also attributed to the *isnad* system—a chain of narrators passing down knowledge. Teachers would certify students in recitation, ensuring fidelity to the original.
– Alongside this, the text was preserved in a way that multiple recitations (*qira’at*), which differ slightly in pronunciation or wording but are all considered authentic, were transmitted.

6. **Manuscript Evidence**:
– Early manuscripts, like the Sana’a manuscripts and the Topkapi manuscript, dating back to the 7th or 8th century, show remarkable consistency with the modern Quran, supporting claims of textual preservation.

Summary of methods of preservation Holy Quran per Grok.
These methods—rooted in both rigorous memorization and meticulous documentation—form the backbone of the traditional Muslim narrative of the Quran’s preservation. Scholars and historians often note this as a unique example of a religious text maintained with such continuity over 1,400 years.