What are the connotations of the words "asher Milei Yadam Lechahen"?
Rashi (Zevachim, 13a): It refers to the inauguration that takes place via the Bigdei Kehunah. 1
Implying that Aharon's sons were inaugurated both by being anointed with the Shemen ha'Mishchah and by wearing the four Bigdei Kehunah for the first time.