The Guru Granth Sahib (ਗੁਰੂ ਗ੍ਰੰਥ ਸਾਹਿਬ}, gurū granth sāhib, or Adi Sri Guru Granth Sahib, is the holy scripture and the final Guru of the Sikhs. The book is sometimes referred to using the shortened title of Adi Granth which means First Volume.
The Guru Granth Sahib opens with the Mool Mantar (Main Chant or Root Verse):
Ik Onkaar (ੴ)
There is only one God.
Sat Naam (ਸਤਿ ਨਾਮੁ )
Truth is his name
Kartaa Purakh (ਕਰਤਾ ਪੁਰਖੁ )
He is the creator
Nirbhao (ਨਿਰਭਉ )
He is without fear
Nirvair (ਨਿਰਵੈਰੁ )
He is without hate
Akaal Moorat (ਅਕਾਲ ਮੂਰਤਿ)
He is timeless and without form
Ajoonee Saibhang (ਅਜੂਨੀ ਸੈਭੰ)
He is beyond birth and death, The enlightened one
Gur Parsaad (ਗੁਰ ਪ੍ਰਸਾਦਿ)
He can be known by the Guru’s grace
Embrace His meditation
He was present in the beginning
He was present before the Yugas (ages) began.
Hai Bhee Sach
He Is present now
Naanak Hosee Bhee Sach
(Guru) Nanak (Dev Ji) says that he shall certainly be present in the future
Every Sikh is expected to memorize this prayer and recite it upon waking. It is a mantra that Sikhs meditate on and its place at the beginning of the Sri Guru Granth Sahib ensures that all that follows is connected to the Mool Mantar.