Shloka 2.20.3
अयोध्याकाण्डे विंशः सर्गः — Rama Enters Kauśalyā’s Antaḥpura; Ritual Preparations and the Shock of Exile
कौशल्यायां यथा युक्तो जनन्यां वर्तते सदा।तथैव वर्ततेऽस्मासु जन्मप्रभृति राघवः।।।।
kauśalyāyāṃ yathā yukto jananyāṃ vartate sadā | tathaiva vartate 'smāsu janmaprabhṛti rāghavaḥ ||
Just as Rāghava is ever devoted in his conduct toward his mother Kausalyā, so has he behaved toward all of us, from the very time of his birth.
Rama conducted himself towards us in the same way as he did towards his mother Kausalya right from the begining.
Respect and fairness within family: Rama’s dharma is shown as consistent honor toward his own mother and equal regard toward other maternal figures in the household.
Rama’s longstanding character is being testified to—his steady, respectful behavior toward Kausalya and likewise toward the other queens.
Sāmya (even-handedness) and guru-jana-sammāna (reverence for elders).