[Avodah] source for custom to say/sing extra pesukim after shir hamaalos before benching

[Arie Folger]

R'MCohen asked:
> what is the source for the custom to say/sing extra pesukim,
> [Tehillas haShem... --AF] after shir hamaalos before benching?

I recall that it is actually older than the recitation of Shir haMaalos /
Al Naharos Bovel and was introduced by the author of Modeh Ani, Rabbi Moshe
Ben Machir.

-- 
Mit freundlichen Gren,
Yours sincerely,
Arie Folger
Visit my blog at http://rabbifolger.net/
<http://rabbifolger.net/2016/01/28/wir-missionieren-nicht-aber-warum-nicht/>