Answer

“Tela” Jain dharma me 3 din ka upvas/tap hai. “Pachchhkan” ka matlab hota hai vrat ya niyam lena, yani nirdisht samay ke liye sankalp karna. ( jainwaves.com)

Explanation

Isme aam taur par 3 din tak ann ka tyag kiya jata hai; kuch paramparaon me ubla hua pani hi liya jata hai. ( herenow4u.net)

Spiritual Understanding

Jain dharma me aisa tap indriya-nigrah, vairagya aur karma-nirjarā ke liye kiya jata hai. ( jainwaves.com)

Takeaway

Saar: “Tela ka pachchhkan” = 3 din ke upvas ka sankalp.