# An indaba is an important conference held by the izinDuna (principal men) of the Zulu and Xhosa peoples of South Africa. (Such meetings are also practiced by the Swazi, who refer to them using the close cognate indzaba. ...
# (in-daa-bah) - A conference or expo, from the isiZulu word meaning "a matter for discussion".http://www.2010travelinfo.com/index.php ... o/sa-slang
I like the suggestion "to ponder"
"To sleep on it" means to take a day to deliberate/ponder/think about it before making a decision.
You can also say:
To weigh the decision carefully
To weigh all the arguments carefully