seeking a declaration that order dated 19.09.1986 passed by High Court of Punjab and Haryana is not binding on the ownership rights of plaintiffs being collusive between defendants Darbara Singh, Mukand Singh and Jarnail Singh and mutation of inheritance No.3578 dated 09.09.1987 is null and void besides seeking a decree for permanent injunction restraining defendants No.1 to 3 from executing, implementing the impugned decree in any manner for the reason that the plaintiffs had purchased the land fully described in headnote of the plaint vide two sale deeds dated 06.02.1986 for an area of 14K-17M and 15K-16M respectively and since then, they have been in actual possession of the purchased land; originally the land was purchased by Jai Kaur mother of the defendants who had died leaving behind registered Will dated 19.03.1966 in favour of Mukand Singh; after her death, mutation of inheritance was sanctioned in the name of Darbara Singh, Jarnail Singh, Mukand Singh, Bibi, Kello and Sham Kaur; one of the defendants Darbara Singh had filed a civil suit No.274 dated 09.05.1980 claiming the entire land on the basis of a Will dated 25.06.1974 said to have been executed by Jai Kaur in his favour; that suit was decided on 17.03.1983 in which the Will set up by Mukand Singh was accepted whereas the Will propounded by Darbara Singh was rejected; the appeal against that judgment was dismissed by Addl. District Judge on 31.07.1985; thereafter, mutation of inheritance was sanctioned in favour of Mukand Singh on 28.01.1986; Darbara Singh