Nabhaga's father said: All the descendants of Angira are now going to perform a great sacrifice, but although they are very intelligent, on every sixth day they will be bewildered in performing sacrifice and will make mistakes in their daily duties

Expressions researched:
"Nābhāga's father said: All the descendants of Aṅgirā are now going to perform a great sacrifice, but although they are very intelligent, on every sixth day they will be bewildered in performing sacrifice and will make mistakes in their daily duties"

Srimad-Bhagavatam

SB Canto 9

Nābhāga's father said: All the descendants of Aṅgirā are now going to perform a great sacrifice, but although they are very intelligent, on every sixth day they will be bewildered in performing sacrifice and will make mistakes in their daily duties.

SB 9.4.3, Translation and Purport

Nābhāga's father said: All the descendants of Aṅgirā are now going to perform a great sacrifice, but although they are very intelligent, on every sixth day they will be bewildered in performing sacrifice and will make mistakes in their daily duties.

Nābhāga was very simple hearted. Therefore when he went to his father, the father, in compassion for his son, suggested that as a means of livelihood Nābhāga could go to the descendants of Aṅgirā and take advantage of their misgivings in performing yajña.