Ok. I got it we can't travel with WL non e-ticket thru sleeper coaches.
But, in the same blog, he is saying that we can board the sleeper coach with even general ticket and if TTE approaches us and if there are available seats, then he won't fine us and we need to pay remainder of sleeper ticket and we will get seat. But, if seats are not available, then he will charge us 250/- rs fine as well as remainder of fare. Is it true?