In Jainism, the Bhaktamar Stotra is a revered devotional hymn dedicated to Lord Adinath (Rishabhanatha), the first Tirthankara. There is no strict rule regarding the specific time when one must listen to or recite the Bhaktamar Stotra. However, traditionally, the following guidelines are observed:

1. Morning Time: It is considered most auspicious and spiritually beneficial to listen to or recite the Bhaktamar Stotra early in the morning after completing daily purification rituals (snana and puja).

1. Cleanliness: One should be physically clean and wear clean clothes before listening to or reciting the stotra.

1. Peaceful Environment: Choose a quiet and peaceful place to help focus the mind on devotion and prayer.

1. Special Occasions: Many Jains also listen to or recite the Bhaktamar Stotra during Jain festivals, on auspicious days, or when seeking spiritual strength or relief from difficulties.

1. Regular Practice: Listening to or reciting the Bhaktamar Stotra regularly, with faith and devotion, is encouraged, and it can be done at any time of the day if performed with sincerity.

In summary, while morning is considered ideal, sincere listening or recitation of the Bhaktamar Stotra at any clean, quiet, and convenient time is accepted in Jain practice. The intention and devotion are most important.