A phrase used to quote someone's words or state a reason; also used to introduce contrast or objection (as in '...said' / 'although...').
彼は行くと言って、結局来なかった。
He said he'd go, but in the end he didn't come.
子供だからと言って何でも許されるわけではない。
Just because someone is a child doesn't mean everything is forgiven.
高いと言っても、この品質なら納得できる。
Even though it's expensive, the quality makes it acceptable.