The Firdausi order, also known as the Firdausi movement or Firdausi sect, was a medieval Sufi movement that emerged in the region of Bihar in India. Sufism is a mystical form of Islam that emphasizes the inward search for God and the development of a personal relationship with the divine. The Firdausi order was named after the Persian poet Ferdowsi, who was highly revered by the Sufis.

1. Origins and Spread:
The Firdausi order originated in the 13th century and gained popularity in the region of Bihar, which is located in eastern India. It was founded by a Sufi saint named Hazrat Shah Niamatullah Wali, who was born in Ayodhya and later settled in Bihar. He was a disciple of Hazrat Shah Jalaluddin, the founder of the Suhrawardi order.

2. Teachings and Practices:
The Firdausi order followed the teachings of Hazrat Shah Niamatullah Wali, which emphasized the importance of love, devotion, and selflessness in the spiritual journey. The followers of this order believed in the concept of Wahdat al-Wujud, which means the unity of existence. They believed that the entire universe is a manifestation of God's divine presence.

3. Spread and Influence:
The Firdausi order gained a significant following in Bihar and neighboring regions. Its popularity can be attributed to the charisma and teachings of Hazrat Shah Niamatullah Wali, who was considered a spiritual guide and mentor by his disciples. The order attracted people from various social and religious backgrounds, including both Muslims and Hindus.

4. Cultural and Literary Contributions:
The Firdausi order played a significant role in promoting Persian literature and culture in the region. The followers of this order had a deep appreciation for Persian poetry and literature, especially the works of Ferdowsi. They also composed their own poetry in Persian, which reflected their spiritual beliefs and experiences.

Conclusion:
In conclusion, the Firdausi order was popular in the region of Bihar in India. It was founded by Hazrat Shah Niamatullah Wali and emphasized love, devotion, and selflessness in the spiritual journey. The order gained a significant following and contributed to the promotion of Persian literature and culture in the region.