Peace, contentment, happiness. (Glossary for the Vahinis)
Santosham is not the common type of joy or happiness, the transient, trivial pleasure you get from worldly success or material gain. ‘San’ means anything gained through fair means, honoured methods. ‘tosham’ is sacred, holy, exaltation, ecstasy. Of all the gifts that you receive from God, the greatest gift is Santosham. No wealth or other attainment can equal it in efficacy. Santosham is the culmination of desire in full contentment and sacred satiety. (SSS Vol.8, p. 122)
Man can experience joy and happiness only when he has contentment. As desires grow, discontent grows and worries multiply. You must learn to be content with your condition. He who has got much satisfaction is the richest man. (SSS Vol.22)
Without contentment, Kama and Lobha attain dangerous proportions and will overwhelm the power of discrimination itself. Desire easily becomes greed, and greed degenerates into miserliness and lust. Giving up all other desires and ever content, dwell on His Name and His Rupam only, to the exclusion of everything else. Dhyanam on these is real Shanti, genuine Santosha. (DhyV, pp. 72-73)