Good souls and Bad souls
There was an Amritdhari Bibi who was constantly being told by this Devta (good) soul to take it to darshan of Sri Darbar Sahib (Amritsar). This soul was incidentally a muslim soul. Maskeen Ji says he was astonished when that illiterate Bibi started reciting Quran-e-Sharif to him. Some of his companions got scared but Maskeen Ji assured them the soul is not bad, on the contrary, it is a Farishta soul as the only souls that can go inside Darbar Sahib are the good souls, the Devtas. No Bhoot Prett can dare to enter the premises of Sri Darbar Sahib.
Maskeen Ji requested that Bibi to recite the namaz of Zohr to him. Surprisingly, the rooh replied, "I have no interest in Zohr, I only like to recite the namaz of Fajr (the namaz of Amrit Vela for muslims) and that is what I recite the whole day". Maskeen Ji says I heard a lot of Quran from that bibi but only when that farishta is in that Bibi, otherwise she cannot recite a single line. Maskeen Ji then asked, "So why have you come for darshan of Sri Darbar Sahib then?" The rooh(soul) replied, "For this is only dar (door), the only place where I feel at peace with myself". Maskeen Ji asked the reason for its wandering despite it being such a namazi and connected to Allah, he replied, "I am forced to, because I have yet to find appropriate to-bemother in muslims through whom my birth can take place".
This proves that the Bani that we read does not go to waste, it goes along with us when we leave our physical body. Just as an animal has the body but not any mann, the rooh has mann (and in it all its contents), but no body.
So, that muslim farishta (angel) said to Maskeen Ji that the reason he has come to him is because he has studied Quran and that he feels like coming to him again and again to listen to path.
Maskeen ji said to him that he can most certainly come everyday. One day it came to Maskeen Ji holding two bottles of perfumes in both hands and said, "I realised I came to you empty handed, so please accept these bottles of perfume as a gift from my side". Maskeen Ji asked that faristha whether other roohs like him come to Sri Darbar Sahib, and it replied "Oh yes, thousands like me everyday as there is anand, rass at Sri Darbar Sahib."
Therefore, there are millions of people in this world and so are millions of good and bad souls. The bad souls, the Bhoots, cannot come to Gurdwaras and holy places as their sanskars and way of living do not match with those at holy places. Their rass is at gambling houses, pubs, and brothels and that is where they feel at 'home'.
But places like Sri Darbar Sahib, Sri Hazoor Sahib, Sri Sis Ganj Sahib are always packed with good souls, the Devtas. These souls will not go anywhere else till the time they take new birth somewhere.