Rabbi Elazar explains that the Kedusha comes from the verse (Leviticus 11:44)
“כִּי אֲנִי יְהוָה אֱלֹהֵיכֶם וְהִתְקַדִּשְׁתֶּם וִהְיִיתֶם קְדֹשִׁים כִּי קָדוֹשׁ אָנִי וְלֹא תְטַמְּאוּ אֶת נַפְשֹׁתֵיכֶם בְּכָל הַשֶּׁרֶץ הָרֹמֵשׂ עַל הָאָרֶץ”
“’For I am YHVH your God. Consecrate yourselves therefore, and be holy, for I am holy. And you shall not make yourselves unclean with any of the swarming things that swarm on the earth.”
‘Consecrate yourselves’ is for the first ‘Holy’
‘and be holy’ for the second ‘Holy’
‘for I am holy’ for the third ‘Holy’.
The Yenuka praised Rabbi Elazar for his explanation and ask him to go back to the study of blessings.
Rabbi Elazar continues the study about blessings. He says that blessings come from Binah, which is the source of all blessings. Binah is like a water pool of abundant blessings. The pool has many fish of many kinds. The blessings from the pool, Binah, flow down to Malchut through the Sefirot of Zeir Anpin.
Lesson; Tzadikim of high level nourish from the water of life coming from Binah and for that they are called ‘fish of the Sea’ , ‘נוני ימא’.