Verse 26.2

Having ascertained the years from a guess of the age is Jupiter in the trikonas (1st to 4th, 5th to 8th, or 9th to 12th houses) from the lagna with the three portions (drekkanas), respectively. [The birth was in] the summer season when the lagna contains the Sun. But those described with those remaining when the season is in another ayana.

English translation by Michael D Neely (2007)

Word-for-Word grammar analysis breakdown

lagnatrikoṇeṣu = in the trikonas (1st, 5th, or 9th houses) from the lagna
gurus (stem form: guru) (masculine, nominative, singular) = Jupiter
tri = three
bhāga = portion
tribhāgais (stem form: tribhāga) (masculine, instrumental, plural) = with the three portions (drekkanas)
vikalpya (vi + 1st class verb root: klṛp) (gerund) (indeclinable) = having ascertained
varṣāṇi (stem form: varṣa) (neuter, accusative, plural) = years
vayas = age
anumāna = guess
vayo'numānāt (stem form: vayonumāna) (neuter, ablative, singular) = from a guess of the age
grīṣmas (stem form:grīṣma) (masculine, nominative, singular) = summer season
arka = the Sun
lagna = lagna
arkalagne = when the lagna contains the Sun
kathitās (1st class verb root: kath) (past passive participle, masculine, nominative, plural) = those described
tu (conjunction) (indeclinable) = but
śeṣais (stem form: śeṣa) (masculine, instrumental, plural) = with the remaining
anya = another
ayana = ayana ṛtu = season
anyāyanartau (stem form: anyāyanartu) (masculine, locative, singular) = when the season is in another ayana
ṛtus (stem form: ṛtu) (masculine, nominative, singular) = season
arka = the Sun
cāra = movement
arkacārāt (stem form: arkacāra) (masculine, ablative, singular) = from the movement of the Sun