This section is from the book "The Brihat Jataka Of Varaha Mihira", by N. Chidambaram Aiyar. Also available from Amazon: Brihat Jataka of Varahamihira.
1. Nine, ten and eight, multiplied respectively by three, three and four give the sums of the numbers of the first two, the first three, and all the four groups of Nabhasa yogas (a). The Yavanas treat extensively of one thousand and eight hundred of such yogas (b). We shall here summarise them (c).
(a) Curiously enough, the Author adopts a rather circuitous method of stating the numbers of the several groups of Nabhasa yogas. The statement amounts to an Algebraical problem: to find 4 numbers such that the lst + the 2nd = 9x3 = '27. Ist + 2nd + 3rd = 10x3 = 30. lst + 2ud + 3rd + 4th = 8 x 4 = 32. It is clear that the number of the last group = 32-30 = 2. The number of the 3rd group = 30-27 = 3. The number of the first and second groups is given as 27. According to the Commentator, the 1st group consists of 20 yogas and the 2nd of 7. In other words, what the Author wants to say is briefly this - The Nabhasa yogas consistof 4 groups as follow:
Akriti yogas 20; Sankhya yogas 7; Asraya yogas 3; and Dala yogas 2.
(b) Vide, note at the end of the Chapter for the particulars of the 1800 Nabhasa yogas. According to Suchidhwaja, the number of Nabhasa yogas is unlimited though the Yavanas speak of 1,800 of them.
(c) The Author says that his 20 Akriti yogas and, 7 Sankahya yogas contain the 1800 yogas of the Yavanas and that he speaks only of 32 yogas, because their effects are the same as the effects of the 1800 yogas.
2. According to Satyachariyar, if all the planets occupy (a) the movable, fixed or common signs, the yogas are respectively known as Rajju, Musala, and Nala and these three form the group of Asraya yogas. Again according to Parasara, if the benefic planets (b) occupy the Kendras (c), the yoga is known as Srik or Mala; and if malefic planets, (d) occupy the Kendras (e) the yoga is known as Sarpa. These two form the group of Dala yogas.
In this stanza, the Author describes the three Asraya Yogas and the two Dala yogas.
(a) One or two or three or all the four of the signs. According to some, the planets ought to occupy all the four signs. This is opposed to Garga.
(b) Viz., Mercury, Jupiter and Venus according to Garga.
(c) Three of the Kendras according to Garga; while there are no malefic planets in any of the Kendra houses according to Badarayana.
(d) Viz.: - The Sun, Mars and Saturn according to Garga.
(e) Three of the Kendras according to Garga while there are no benefic planets in any of the Kendra houses according to Badarayana.
3. Other Astrologers say that the Asraya yogas are identical with the Yava (a), Abja (b) Vajra (c), Andaja (d), Gola (e), and the like yogas (f), and that when the effects of planets occupying the Kendras are described, the effects of Dala yogas are also described and they produce no separate effects (g).
In this stanza, the Author explains the reason why certain Astrologers have failed to treat of the Asraya and Dala yogas in their works.
(a), (b) (c) Vide Stanza 5. These are Akriti yogas.
(d) Vide Stanza 4. This also is an Akriti yoga.
(e) Vide Stanza 10. This is one of the Sankhya yogas.
(f) The like yogas: such as Sakata (Stanza 4) an Akriti yoga; Kedara, Sula and Yuga (Stanza 10) Sankhya yogas.
The Asraya yogas may be these and may not be these; hence, the Author has deemed it advisable to treat them separately. For instance, if all the planets occupy signs Gemini and Sagittari - 2 of the common signs - when one of these is also the rising sign, the yoga is known both as Vajra and Nala; but if any other sign be the rising sign, it is not a Vajra yoga but only a Nala yoga.
(g) As regards the Dala yogas, it is said that other writers have described the effects of benefic and of malefic planets occupying the Kendras and as these are also the effects of the two Dala yogas they have omitted to treat of them separately; the Author treats of these separately in order to make it known that the two are Nabhasa yogas and as such their effects are felt throughout life (vide Stanza 19 While the other writers have included them among other yogas.
4. If all the planets occupy any two adjacent Kendras, the yoga is known as Gada (a). If they all occupy the ascendant and the 7th house, the yoga is known as Sakata. If all the planets occupy the 4th and the 10th house, the yoga is known as Vihaga (Andaja) If all the planets occupy the ascendant, the 5th and 9th houses, the yoga is known as Sringataka and if all the planets occupy other triangular houses, the yoga is known as Hala (b),
The Author now proceeds to describe the 20 Akriti yogas. Five of them are described in this stanza.
(a) This may be in 4 ways: All the four planets may occupy, (l)the 1st and the 4th houses, (2) the 4th and 7th houses, (3) the 7th and the 10th houses, and (4) the 10th and the 1st houses. The Yavanas consider these 4 as four distinct yogas and call them respectively as Gada, Sankha, Vibhuka and Dwaja. (.Vide notes at the end of the Chapter.)
(b) This may be in three ways: all the planets may occupy, (1) the 2nd, 6th and the 10th houses, (2) the 3rd, 7th and 11th houses, and (3) the 4th, 8th and the 12th houses.
5. If the benefic planets occupy the ascendant and the 7th house while the malefic planets occupy the 4th and the 10th houses, the Yoga is known as Vajra; and if the reverse be the case (a) the yoga is known as the Yava. Again, if all the planets occupy the four Kendras, the yoga is known as Kamala (Abja) and if they occupy the four Panapham (b) or the four Apoklima (c) houses, the yoga is known as Vapi.
In this stanza, four more Akriti yogas are described.
(a) That is, if the malefic planets occupy the ascendant and the 7th house, while the benefic planets occupy the 4th and 10th houses.
(d) That is, the 2nd, 5th, 8th and the 11th houses.
(c) That is, the 3rd, 6th, 9th and the 12th houses.
 
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