Ouankaar Brehumaa Outhupath
ਓਅੰਕਾਰਿ ਬ੍ਰਹਮਾ ਉਤਪਤਿ ॥

This shabad is by Guru Nanak Dev in Raag Raamkali on Page 783
in Section 'Gursikh Janam Savaar Dargeh Chaliaa' of Amrit Keertan Gutka.