* The Rule of St. Benedict: This text outlines a monastic life characterized by strict obedience, poverty, chastity, and a rigorous daily schedule of prayer and work. It's a cornerstone of Western monasticism and emphasizes self-discipline and community living under a structured hierarchy.
* The Imitation of Christ by Thomas à Kempis: While not a "rule" like St. Benedict's, this devotional work strongly emphasizes self-denial, humility, and the pursuit of spiritual perfection through rigorous introspection and prayer. It's intensely focused on personal spiritual discipline.
* Various Sufi Manuals: Sufism, the mystical branch of Islam, has numerous texts that guide practitioners through rigorous spiritual exercises, including disciplined meditation (dhikr), ascetic practices, and intense self-reflection aimed at achieving union with God. The specific practices and emphasis vary significantly across different Sufi orders.
* Different monastic rules within Buddhism: Various Buddhist traditions have specific rules and guidelines for monks and nuns, emphasizing things like celibacy, vegetarianism, non-violence, meditation, and adherence to specific codes of conduct. The Vinaya Pitaka, part of the Buddhist canon, details these rules.
* Halakha (Jewish Law): This body of Jewish law encompasses a vast array of rules and regulations covering every aspect of life, from dietary laws (kashrut) to Sabbath observance. Strict adherence to Halakha constitutes a significant form of religious discipline for observant Jews.
* Certain evangelical and Puritan devotional guides: Some historical and contemporary texts within Protestant traditions emphasize strict self-discipline, including rigid adherence to biblical morality, regular prayer and Bible study, and a renunciation of worldly pleasures.
It's crucial to understand that the interpretation and application of these manuals can vary considerably. What constitutes "strict" discipline is subjective and depends on the individual and the specific community's understanding of their faith. Some may interpret these texts as promoting healthy spiritual habits, while others may apply them in a rigid and potentially harmful manner. Therefore, it's essential to approach any such manual with critical awareness and a holistic understanding of its historical and cultural context.