Hayanaratna · by Balabhadra
Chapter 1 · Planets, Signs, Year Entry
ग्रहराशिस्वरूपवर्षप्रवेशाद्यानयनाधिकारः
एवं शुभसूचकदशापाककाले क्रियमाणा यात्राप्यनायासेन फलसाधिका ॥ अशुभदशायां हानिदेत्यतोवश्यं ज्योतिश्शास्त्रगणनोपयोगः॥
So a journey made in the ripening time of a dasha (planet period) that shows good brings results without strain. In a bad dasha it brings loss. So the reckoning of jyotisha (astrology) is surely of use.
Simple meaning: Timing a journey: in a good period it succeeds easily; in a bad one it brings loss. So astrology is useful.
पूर्वोक्तशौनकादिवाक्यानि दृढमूलकर्मविषयकानि ।
Shaunaka's words: they are about firmly rooted deeds.
दैवपुरुषकारयोः साचिव्यमुक्तं याज्ञवल्क्येन ॥
Yajnavalkya: fate and effort are like two wheels of one chariot.
संक्षेपाज्ज्योतिश्शास्त्राध्यापने फलमाह माण्डव्यः॥
Value of the astrologer: seeing one who truly knows astrology clears sin and brings joy.