do ghost exists?

jasdeepsingh2k125 · February 11, 2013

i happened to see a dharna+kath of sant ranjit singh ji dhardriwale in which he says ghost do not exist then sri akal ustat sahib came in my mind

ਗੰਪ੍ਰਬ ਜੱਛ ਰਚੈ ਸੁਭ ਚਾਰਾ ॥
Gaddhrab Jachch Rachai Soubh Chaaraa||
ग्मप्रब जछ रचै सुभ चारा ॥
He hath created Gandharvas, Yakshas and being of high character.

ਕਹੂੰ ਜੱਛ ਗੰਪ੍ਰਬ ਉਰਗ ਕਹੂੰ ਬਿਦਿਆਧਰ ਕਹੂੰ ਭਏ ਕਿੰਨਰ ਪਿਸਾਚ ਕਹੂੰ ਪ੍ਰੇਤ ਹੋ ॥
Kahoon Jachchh Gaddhrab Urg Kahoon Bidyaadhar Kahoon Bhae Kinnarpisaanch Kahoon Pret Ho||
कहूं जछ ग्मप्रब उरग कहूं बिदिआधर कहूं भए किंनर पिसाच कहूं प्रेत हो ॥
O Lord! Somewhere Thou art Yaksha, Gandharva, Sheshanaga and Vidyadhar and somewhere Thou becomest Kinnar, Pishacha and Preta.

here sant ranjit singh ji is wrong or i a moorakh is wrong?

kindly explain http://www.youtube.com/watch?v=jZNK-b_ilKE