I am sorry for your loss. In Jainism, the passing of a loved one is seen as part of the cycle of birth and death (samsara), governed by karma. Grief is natural, but Jain teachings encourage cultivating equanimity (samata) and practicing detachment (vairagya).

Here are some Jain principles and practices that may help bring stability to the mind during such difficult times:

1. Reflection on Impermanence (Anitya Bhavana): Remember that all worldly relationships and possessions are temporary. Meditating on this truth helps in reducing attachment and sorrow.

1. Prayer and Meditation: Engaging in prayer, reciting Jain sutras (like the Navkar Mantra), or practicing meditation (dhyan) can calm the mind and bring inner peace.

1. Equanimity (Samata): Strive to maintain a balanced mind in both happiness and sorrow. The teachings suggest accepting life's changes with composure.

1. Right Knowledge (Samyak Jnan): Understanding the soul’s immortality can provide comfort. The soul does not perish with the body; it continues its journey based on karma.

1. Ahimsa (Non-violence) to Self: Be gentle and compassionate towards yourself in your grief. Do not harbor anger or guilt.

1. Charity and Good Deeds: Performing acts of charity (daan) in memory of the deceased is considered meritorious and can bring solace.

1. Seek Sangha: Spending time with fellow Jains or in spiritual company can offer support and guidance.

Remember, grieving is a process. Jainism encourages acceptance, spiritual reflection, and gentle detachment to find peace.