Answer

For Guru, the most appropriate and widely accepted Jain sutra to recite is the Panchindiya Sutra.

It is traditionally recited in reverence to Jain monks and spiritual teachers, especially because it describes the qualities of a true Guru.

Explanation

In Jain Dharma, a true Guru is one who has:

• Control over the five senses
• Forgiveness and humility
• Self-discipline
• Detachment from worldly pleasures
• Commitment to the path shown by the Tirthankars

The Panchindiya Sutra praises such qualities and reminds us what kind of Guru is worthy of veneration.

You may also say:

• Namokar Mantra — especially the lines:
  Namo Ayariyanam
  Namo Uvajjhayanam
  Namo Loe Savva Sahunam

These lines bow to Acharyas, Upadhyayas, and all Sadhus.

Spiritual Understanding

When you stand before Guru murthis, the focus should not only be on the image, but on the virtues represented by the Guru:

• Renunciation
• Right conduct
• Scriptural wisdom
• Guidance toward liberation

Reciting Guru-related sutras helps develop humility, devotion, and respect for the Jain spiritual path.

Takeaway

You can respectfully recite:

• Panchindiya Sutra for Guru vandan
• Namokar Mantra, especially the Guru-related lines

If you do not know the full Panchindiya Sutra by memory, saying the Namokar Mantra with devotion is always appropriate.