Ramayana
कलामात्राविशेषज्ञाञ्ज्योतिषे च परं गतान् । क्रियाकल्पविदश्चैव तथा कार्यविदो जनान् ॥ 7-94-7 ॥
He summoned those who knew the distinctions of the kala and matra measures of time, those who had attained the highest skill in astronomy, those versed in the rules of ritual action, and likewise the men who understood practical affairs.
english translation