What is considered the most effective form of Guru service through writing, and why is poetry preferred over prose for this purpose?

According to the preface in Chapter 0, the best and most certain service in writing that can grant salvation is to write the biography of one's Sadguru. This should be done with a pure heart, firm resolve, and unwavering devotion. Chapter 0 further explains that for study, recitation, and weekly recitations (Saptahs), detailed poetic biographies are most suitable. The text argues that prose is difficult to memorize, whereas poetry is memorized quickly and easily, stays in the memory, and can be recalled when needed. This is why ancient Sanskrit literature is predominantly in verse, making poetry the ideal medium for this highest form of Guru service.