This is part of a verse from the StotraSoundarya Lahari [waves of happiness] composed by the great saint and the greatest exponent of Non Duality Adi Sankaracharya. This verse is from the first section called Ananda Lahari [waves of happiness].
This is a completely energized Satvik [pure] composition full of unique mantras. This particular part of a verse is said to be a most powerful mantra to find a job or to progress in your current employment.
The energized chant in this mantra invokes the Universal mother and means that to worship the feet of the divine mother is the same as worshipping the trinity of Brahma, Vishnu and Mahesh.
The continuous chanting of this mantra is said to help the jobless find employment.
Trayanam devanam thrigunajanitanam tav Shive
Bhavet puja puja tav charanayorya virachita ll
त्रयाणां देवानां त्रिगुणजनितानां तव शिवे
भवेत् पूजा पूजा तव चरणायोर्या विरचिता ll