The people, who believe in Kuber, whenever need money they chant Kuber Mantra. He is considered the God of Wealth. Both, Goddess Lakshmi and he, in fact, are the source of wealth.
“Om yakashyaya kuberaya Veaishravanaya dana danyathpathaye danadanya smithirmme dehi tapaya swagah.”
“Om Yaksha Rajaya Vidhmaya Alakadeesaya Deemahe Tanna Kubera Prechodayath.”
Tip: it is said that the worship of Maha-Meru also attracts wealth.