How will he be entitled to "the bullock for a sin offering" Leviticus 9:2 if the other son never broke a commandment Luke 15:29?
Mordecai can be seen as the type of the prodigal son.
The king then removed his signet ring (the very one he had taken back from Haman) and gave it to Mordecai. And Esther designated Mordecai to be in charge of Haman's estate. NET Esther 8:2
And Mordecai went out from the presence of the king in royal apparel of blue and white, and with a great crown of gold, and with a garment of fine linen and purple: and the city of Shushan rejoiced and was glad. KJV Esther 8:15
The noun στολὴν is used widely for royal and priestly vestments in Gen. 27:15, 41:14,42,49:11, Exod. 28:2,3,29:21, Lev. 6:4,16:23,24,32, Num. 20:26; Deut. 22:5; Jdg. 17:10; 2 Sam. 6:14; 2 Chr. 23:13; 1 Es. 4:54; Est. 5:1,6:8,11,8:15, Jdt. 10:7; 16:7;8, 1 Ma. 6:15,10:21, Job 2:12,30:13; Sir. 6:29,31,50:11; Ps. Sol. 11:7; Jon. 3:6; Isa. 9:4,22:17,21; Jer. 52:33; Bar. 4:20,5:1; Ezek. 10:2,6,7 and Mk. 16:5.
The specific gifts that the father gives to the prodigal son, after the sacrifice of the fattened calf, have the meaning described in Revelation 1:6.
And hath made us kings and priests unto God and his Father; to him be glory and dominion for ever and ever. Amen. (Rev. 1:6 KJV)