The Gemera in Meggilah 15a and Pirkei Avot 6:6 says, כל האומר דבר בשם אומרו מביא גאולה לעולם שנאמר ותאמר אסתר למלך בשם מרדכי. My question is, if quoting teachings of other people is very important (because it brings redemption to the world), then why does Rashi on his commentary to Chumash rarely...

I asked this question a couple minutes ago, and it got closed within less than a minute after its publication without any reason noted. It is closed as off-topic, but this is a historical question (tagged by it) about Judaism. I asked the justification in a comment in the cited question thread, b...

Where in tanach is the mitzvah of Netilat Yadaim shown / present? I am essentially asking for the source of the mitzvah.