When the man later approached Lambert's table and started screaming, the two-time Grammy Award victor dumped a salad in his wife's lap, according to TMZ.
According to a TMZ report released on Wednesday, sources told the outlet that the incident happened Sunday night at the Stoney River Steakhouse and Grill in Nashville.
Things apparently took a turn for the worse when an older man began to aggravate the singer's friend, prompting a fight to break out in the restaurant.
TMZ reported that the verbal argument started in the bathroom between a male friend of Lambert's and the woman's husband, eventually spilling over into the main dining area.
After the man came up to her table and started screaming, the 35-year-old singer reportedly started mouthing off to him, and, according to eyewitnesses, had to be held back. The video was reportedly shot just after Miranda dumped the salad into his wife's lap.
Police were called, but by the time they got there Lambert and co. were already gone. However, when officers arrived and wanted to talk to the parties that were allegedly involved, none of the parties were interested in speaking or filing a report with police.