Jyotiṣa-saṅgraha: Varga-vibhāga, Bala-nirṇaya, Garbha-phala, Āyuḥ-gaṇanā
अंतर्दशासु विदशास्तासु चोपदशास्तथा । दशेशमित्रस्वोच्चक्षंगोब्जोब्ध्येकाद्रिवृद्धिगः ॥ १४२ ॥
aṃtardaśāsu vidaśāstāsu copadaśāstathā | daśeśamitrasvoccakṣaṃgobjobdhyekādrivṛddhigaḥ || 142 ||
Dalam antardaśā, daśā khas dan daśā sekunder, apabila penguasa daśā berada pada tanda sahabat atau tanda sendiri, atau dalam kedudukan mulia (exaltasi), serta menempati bahagian yang mujur dan posisi yang kuat, maka daśā itu menjadi pemberi pertumbuhan dan peningkatan.
Sanatkumara (teaching Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It frames worldly rise and decline as time-bound (daśā-based) outcomes, encouraging discernment and steadiness—so one uses favorable periods for dharma and inner progress rather than mere enjoyment.
By showing that external prosperity depends on changing periods, it indirectly supports bhakti as the stable refuge: one should anchor the mind in devotion while navigating favorable and unfavorable daśās.
Jyotiṣa Vedāṅga: interpretation of major and sub-periods (daśā/antardaśā) and how dignity (own sign, exaltation, friendly placement) and strength factors indicate growth-oriented results.