Can you stop benching (saying the grace after a meal) after al-yichasiranu (the end of the fourth blessing of the grace)?
The mechaber brings "harahaman"s as an optional addition to Bircas HaMazone. Today the general Ashkenazic Minhag is to say it all unless you have one of the following two minhagim:
- The GRA holds that on Shabbos one should stop before the personal requests (yifarnisanu bchavod).
- In Slobodka Yeshivah (hence in Chaim Berlin) the custom was to stop at Al Yihasireinu so as to gain a few more minutes for learning Torah. Those who still have this custom either descend from those who learned/taught there or picked it up in Yeshivah.
I believe there is also a source [help please!] that says, while on your employer's time, you should only say the first four berachot. this could be extended to other situations where time or kavana are limited.
It depends on your minhag. Some do, some don't.