Validity of a Revenue Sale—Whether a revenue sale without issuing notice by registered post is valid—Issue of notice equated with service of notice—A sale is not without jurisdiction merely because no notice of sale by registered post was issued—The sale could be avoided if the requirements laid down in the Act are not complied with—The Court committed no illegality in equating issue of notice with service of notice—Bengal Land Revenue Sales (Amendment) Act (II of 1943) S 2. Md. Nurul Islam being dead his heirs: Md. Shamsul Islam and others Vs. Abdul Matek; 6BLD (AD) 201.