Right from the very begening and from the times of Nanak Ji there were constant attempt of quotes matching the style of Gurbaani.And even some persons did not hesitate in making use of NANAK as is clear fro m different quotes.
We are greatly indebted to our Fifth NANAK Ji to put a break for ever to avoid any intrusion of verses in the true Gurbaani words.And equally great indebted to 10th NANAK ji for giving us Living SABADu GuRU as Sri Guru Granth Sahib Ji .
Prakash.S.Bagga
THAT is the KACHI BANI that Guru Amardass Ji warned Sikhs about. IN Fact people like Mehrbaan were very adept and skilled kathavachaks of Gurbani...and began to write SIMILAR bani under the name of NANAK to confuse the sikhs..thats why GURU ARJUN JI decided to Bind all AUTHENTIC GURBANI in the One Volume POTHI SAHIB (SGGS) and di it so skillfully with numbers/mahalls/additions/sub-totals/checks and double checks notes etc thats its IMPOSSIBLE to add or subtract any TUK or even one word form SGGS without revealing the interference !!
The One and only instance of adulteration could occur only AFTER the Mundawnni Chhaap MOHR of closure of Mundawwni Mah 5 at the end of SGGS. Thus Raagmalla and various OTHER BANIS come after the Slok mahlal oanjvaan that seals the SGGS CLOSED.
This ILLEGAL use of the Nanak Chhaap may have been the REASON for Guru hargobind Ji,Guru har rai ji and Guru Harkishan Ji for not writing any Gurbani to show that any Bani written by Mehrbaan etc under Mahalla CHHEVAAN Satvaan AAThvaan etc would be instantly seen as Fake.
GURU ARJUN JI was MARTYRED for writing the SGGS !! This was His GREATEST CRIME..and TODAY we cna see as FACT how the SGGS is the ONE FORT that we Sikhs have that is IMMPOSSIBLE TO DESTROY/BREACH !! IF NOT for the strength of SGGS..we would be LOST totally LOST.