Rinpoche's previous life
Khentrul Thokmeth Rinpoche is the reincarnation of Geshe Rikzang Rinpoche who was born in 1872 as a son to Dorji Wangchuk as his father and, Sangay Dolma as his mother.
When Rinpoche was born, there appeared many auspicious signs. He was ordained into Tongsa Monastry when he was 10, and hence started to study alphabets, grammer, history, instruments and dance, including mudras and making tormas, etc. till graduation.
1892, at the age of 20, dued to past connections, he met the First King of Bhutan, Ugyen Wangchuk, and subsequently became the King's Guru.
After that, Rinpoche went to Kham Zokchen Sheri Sangha Monastry to meet Khenpo Shenga Rinpoche, took his bikshu precepts, and was given the name Geshe Rikzang Rinpoche.
During his stay in Kham, Rinpoche studied under the instructions of Khenpo Shenga Rinpoche, Zokchen Pema Rikzen Rinpoche, Tulku Tubten Choki Dorji and many other Rinpoches in sutras, commentaries, tantra, debate, astrology, zhogchen, empowerment and oral transmission till completion.
After that, Rinpoche strated his medical study with Ani Tubten for three years, and he continues to give medical care to the local Tibetan monks and lay people, curing their sickness and suffering.
It took Rinpoche 13 years in Kham in order to accomplish his Zhogchen practice and offer his knowledge in medicine to the local people.
In 1905, Rinpoche returned to Bhutan and became the guest of the Second King of Bhutan, Jigme Dorji Wangchuk. And then, at the request of His Majesty, Rinpoche started his retreat in three different monasteries in sequence, first the Tongsa Tabe Monastery, Pechud Monastery the second, and the third, Bumthang Lukgi Rawa Monastery. He stayed for three years and three months in each of the mentioned monastery, which all together took him 9 years and 9 months.
When Rinpoche was in retreat, a rainbow appeared in the blue sky, and the offering water in the hall boiled. During his Tandin Deity practice, neigh of horse was often heard, many of his disciples had witnessed these extraordinary phenomenas.
After the retreat, transmission of what he had learned to his disciples and students had become the focus of his life, which in time more and more people were drawn to him
In 1931, the Second King of Bhutan, Jigme Dorji Wangchuk's sister, Ashi Wangmo found that her vajra guru has reincarnated as Benchen Khen Rinpoche and he was in need of a good teacher to educate him, therefore, the King has requested the 16th Karmapa to make a astrological augury in order to select an appropriate teacher. The augury showed that Geshe Riksang Rinpoche was the person that suited the task. Hence Rinpoche has gone to Kurtue Tanga Chuk Monastery to educate Benchen Khen Rinpoche.
In 1963, at the age of 93, Geshe Rikzang Rinpoche passed into parinirvana on the 15th of the first month of Tibetan calendar.
Karmar jiangsem( red and white bodhi) were found in his nose, and he remained in meditation for 21 days, It seemed that he has performed the process of passing into nirvana as an reminder of impermanency to sentient beings.
Rinpoche's body was brought to Guru Rinpoche's sacred place Bumthang Kurge to be cremated under the instruction of Ashi Wangmo. And in the middle of the cremation, many disciples and attendants have witnessed rainbow in the sky, flowers and nectar shower and they prostrated in tears. Many of them have written their reincarnation prayers to Rinpoche.