The Kingdom of God is Within You by Leo Tolstoy Chapter 3 Page 65

oil. This will guarantee his welfare in the future life. After his death it is instilled into his relatives that it is a good thing for the salvation of the dead man to place a printed paper of prayers in his hands; it is a good thing further to read aloud a certain book over the dead body, and to pronounce the dead man's name in church at a certain time. All this is regarded as faith obligatory on everyone.

But if anyone wants to take particular care of his soul, then according to this faith he is instructed that the greatest security of the salvation of the soul in the world is attained by offering money to the churches and monasteries, and engaging the holy men by this means to pray for him.

Entering monasteries too and kissing relics and miraculous ikons, are further means of salvation for the soul.