This is from the Spanish mano (meaning: hand).

The Filipino tradition of pagmamano involves kissing an elder’s hand or raising the hand to touch your forehead. Children do this especially during the holidays when visiting their grandparents to ask for gifts.

Magmano ka muna kay Lola bago ka dumiretso sa kusina.
Kiss the hand of Grandma first, before heading straight to the kitchen.

Mga bata ngayon… hindi marunong magmano.
Children today don’t know how to kiss the hands of elders.

is performing the pagmamano

performed the pagmano

Mano po.
literally “Hand, pleaseā€¦ Sir/Madam.”