Gandhi's religion is spirituality

Religion as Mata Amritanandamayi said is the outer shell of the coconut, while spirituality is sweet nectar contained inside. What the Divine Mother meant was that it was not enough to scrape the outer shell but dive deep to taste the sweetness inside.

In a similar vein, Swami Vivekanda said that it was a great blessing to be born into a religion but a great curse to die in one.

What the revered Swami meant was that if religion has not taught man to go beyond religion, that religion has been a waste.

A perusal of the Mahatma’s writings on religion and spirituality clearly point to the fact that to the Mahatma, the term religion was synonymous with spirituality.
In 1921, the Mahatma wrote: "I call myself a Sanatani Hindu, because I believe in the Vedas, the Upanishads, the Puranas, and all that goes by the name of Hindu scripture, and therefore in avataras and rebirth; I believe in the varnashrama dharma in a sense, in my opinion strictly Vedic but not in its presently popular crude sense; I believe in the protection of cow … I do not disbelieve in murti puja."

(Young India: June 10, 1921)
Four years later: "Hinduism as I know it entirely satisfies my soul, fills my whole being … When doubts haunt me, when disappointments stare me in the face, and when I see not one ray of light on the horizon, I turn to the Bhagavad Gita, and find a verse to comfort me; and I immediately begin to smile in the midst of overwhelming sorrow.

“My life has been full of tragedies and if they have not left any visible and indelible effect on me, I owe it to the teachings of the Bhagavad Gita." (Young India: June 8, 1925)
The other great inspiration was Lord Jesus. In 1937, he wrote: "I regard Jesus as a great teacher of humanity, but I do not regard him as the only begotten son of God. That epithet in its material interpretation is quite unacceptable.

“Metaphorically we are all sons of God, but for each of us there may be different sons of God in a special sense. Thus for me Chaitanya may be the only begotten son of God … God cannot be the exclusive Father and I cannot ascribe exclusive divinity to Jesus." (Harijan: June 3, 1937)

God and truth were not different: "I worship God as truth only. I have not yet found Him, but I am seeking after Him. I am prepared to sacrifice the things dearest to me in pursuit of this quest. Even if the sacrifice demanded my very life, I hope I may be prepared to give it.”