a drowning person catches at a straw

a drowning man catches at a straw

a little help, small favour, a little cooperation, a drowning man needs a straw

a guilty pricks the mind, a guilty conscience needs no accuser

magnifying a small or simple thing, to exaggerate, elevation from low to highest

where there is a dispute, the decision is made according to the customs

make a mountain out of a molehill

just a shadow of lurking calamity

to be robbed of everything

a betel leaf mellowed due to being buried in sand

stiches on a wound

talk or prate thoughtlessly, blab

stitching a wound

child-play

doll wedding, (figuratively) girls games

To sell a horse.

whatever clever people do, they have an axe to grind

admitting even a little treatment, Metaphorically: a little help, a little consolation

the custom of exchange marriage

wedlock

be obliged for a small favour