बृहत्संहिता (आचार्य वराहमिहिर - स्थापत्य, खगोल, मौसम व जल विज्ञान)

46 बृहत्संहितायाम् [Adh. V. 4-7
यदि मूर्तो भविचारी शिरोऽथवा भवति मण्डली राहुः ।
भगणार्द्धेनान्तरितौ गृह्णाति कथं नियतचारः ॥४॥
Sloka 4.—For, if Rahu has a form, travels in
the zodiac, possesses a head and has a circular orb, how
is it that he whose movement is fixed and uniform
seizes the two luminaries who are situated 180° away
from him ?
अनियतचारः खलु चेदुपलब्धिः संख्यया कथं तस्य ।
पुच्छाननाभिधानोऽन्तरेण कस्मान्न गृह्णाति ॥५॥
Sloka 5.—If his gait has not been fixed, how is his
exact position determined by calculation ? If he is to be
distinguished by his tail and face, why should he not
seize them at other intervals (instead of only when
180° apart.) ?
अथ तु भुजगेन्द्ररूपः पुच्छेन मुखेन वा स गृह्णाति ।
मुखपुच्छान्तरसंस्थं स्थगयति कस्मान्न भगणार्द्धम् ॥६॥
Sloka 6.—For, if this Rahu who is of the form
of a serpent is able to seize the Sun or the Moon through
his tail or mouth, why should he not conceal or hide
half of the zodiac which is the interval between his head
and tail ?
राहुद्वयं यदि स्याद् ग्रस्तेऽस्तमितेऽथवोदिते चन्द्रे ।
तत्समगतिनान्येन ग्रस्तः सूर्योऽपि दृश्येत ॥७॥
Sloka 7.—If there should be two Rahus, when the
Moon. has set or risen and is eclipsed by one Rahu,
the Sun (who is 180° from the Moon) should also be
eclipsed by the other Rahu whose rate of motion is
also similar.