ashramas and stages of life
Why do some traditions say a person should not take sannyasa while parents are alive?
The duty to parents
A central idea in dharmashastra, the body of texts on duty and right conduct, is that a person is born with debts. One of these is owed to the ancestors and, by extension, to living parents. The tradition calls this pitri-dharma, the duty toward one's parents and forebears. Parents are seen as having given life, raised the child, and kept the family line going. Until they are cared for and no longer depend on the child, that debt is not cleared. Taking sannyasa, full renunciation, means leaving behind all household ties. If a parent still needs support, the tradition says that leaving is not yet the right step. The renunciant's path is meant to come after the householder's duties are done, not instead of them.
Where the tension comes from
The four ashramas, the stages of student, householder, forest dweller, and renunciant, are meant to follow one another in order. Sannyasa sits at the end. But the Jabala Upanishad, an older text, takes a different view. It allows renunciation at any stage of life, even early, if the calling is genuine. This created a real tension in the tradition. Some commentators tried to hold both ideas together by saying that the Jabala permission applies only to rare cases of extraordinary inner readiness. Others read it more openly. The debate was never fully settled, and different teachers and schools have come down on different sides.
What it points to
Behind this question is a bigger one: when does inner readiness outweigh outer duty? The tradition generally says that renunciation entered too early, before real life has been lived and real responsibilities met, can be an escape rather than a genuine turning. True vairagya, the dispassion that leads to sannyasa, is meant to arise naturally after the world has been fully engaged, not before. Caring for parents is seen as part of that engagement. It is not just a social obligation. It is also a practice of selflessness that prepares the person for the deeper letting go that sannyasa asks for.
How it looks today
In practice, different communities and monastic orders handle this differently. Some require that a person have no dependent parents before initiation. Others leave it to the teacher and the student to assess together. Many great figures in the tradition took renunciation while parents were alive, and some were encouraged to do so by the parents themselves. So while the concern about filial duty is real and widely held, it has never been an absolute rule across all of Hinduism. The answer depends on the tradition, the teacher, and the circumstances.