SB 10.57.4
yo ’smabhyam sampratisrutya
kanya-ratnam vigarhya nah
krsnayadan na satrajit
kasmad bhrataram anviyat
Translation:
“Satrajit promised his jewellike daughter to us but then gave her to Krsna instead, contemptuously neglecting us. So why should Satrajit not follow his brother’s path?”
Purport:
Since Satrajit’s brother, Prasena, had been violently killed, the implication of “following his brother’s path” is obvious. What we have here is an assassination plot.
It is well known that both Akrura and Krtavarma are exalted, pure devotees of the Supreme Lord, so their unusual behavior requires some explanation. The acaryas provide it as follows: Srila Jiva Gosvami states that Akrura, although a first-class, pure devotee of the Lord, was a victim of the anger directed against him by the residents of Gokula because he took Lord Krsna away from Vrndavana. The gosvami further states that Krtavarma had associated with Kamsa — both of them being members of the Bhoja dynasty — and thus Krtavarma was now suffering from this undesirable association.
Srila Visvanatha Cakravarti offers an alternative explanation: Both Akrura and Krtavarma were furious with Satrajit because he had insulted Lord Krsna and spread false rumors about Him in Dvaraka. Under normal circumstances Akrura and Krtavarma would have been most pleased that Lord Krsna married the beautiful Satyabhama. Being pure devotees, they could not actually be unhappy about this match, nor could they become jealous rivals of the Lord. Therefore they had an ulterior motive in behaving like His rivals.