This Shabad is by Guru Arjan Dev Ji in Siree Raag on Ang 73 of Sri Guru Granth Sahib Ji Maharaj .

Siree Raag, Fifth Mehla:

Guramukh laahaa lai geae manamukh chalae mool gavaae jeeo ||19||
The Gurmukhs reap their profits and leave, while the self-willed manmukhs lose their investment and depart. ||19||