A Hebrew phrase meaning 'may your strength be firm,' traditionally said to congratulate someone who has performed a religious duty.
↗ Read on WikipediaMentioned once in Star Mitzvah.
Star Mitzvah
Season 10 · Episode 6 · S10E06
“Yasher Koach Frederick. That was a beautiful passage, and a wonderful reading.”
From the same episode and category.
“a Bar Mitzvah is a rite of passage, not an opportunity for you to collect presents.”
“And in the spirit of the occasion, I'm going to try to learn it in Hebrew.”
“The Seattle Star Trek convention is this weekend, and all the Enterprise captains are making an appearance.”
“I need Scott Bakula's autograph to make my collection complete.”