Srimad Bhagavatam Canto 10, Chapter 78, Text 30

SB 10.78.30

asya brahmasanam dattam
 asmabhir yadu-nandana
ayus catmaklamam tavad
 yavat satram samapyate
 
Translation: 
 
“O favorite of the Yadus, we gave him the seat of the spiritual master and promised him long life and freedom from physical pain for as long as this sacrifice continues.
 
Purport: 
 
Although Romaharsana was not a brahmana, having been born of a mixed marriage, he was invested with that status by the assembled sages and thus given the brahmasana, the seat of the chief officiating priest.
Srimad Bhagavatam Canto 10, Chapter 78, Text 29
Srimad Bhagavatam Canto 10, Chapter 78, Text 31-32