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

Adh XXXV. Sl. 1-3.] पञ्चत्रिंशोऽध्यायः 295
इन्द्रायुधलक्षणाध्यायः ॥३५॥ Signs of Rainbows.
सूर्यस्य विविधवर्णाः पवनेन विघाट्टिताः कराः साभ्रे ।
वियति धनुःसंस्थाना ये दृश्यन्ते तदिन्द्रधनुः ॥१॥
Sloka 1.—The rays of the Sun which have various
colours, being thrown back by the wind in a cloudy sky,
are seen in the form of a bow which is called the
Rainbow.
केचिदनन्तकुलोरगनिःश्वासोद्भूतमाहुराचार्याः ।
तद्यायिनां नृपाणामभिमुखमजयावहं भवति ॥२॥
Sloka 2.—Some sages declare that the rainbow is
caused by the breath of the descendants of Anantha, the
King of serpents. The rainbow appearing in front of
kings starting on an expedition brings about their defeat.
तथा च काश्यपः
अनन्तकुलजाता ये पन्नगाः कामरूपिणः ।
तेषां निःश्वाससम्भूतमिन्द्रचापं प्रचक्षते ॥
अच्छिन्नमवनिगाढं द्युतिमत् स्निग्धं घनं विविधवर्णम् ।
द्विरुदितमनुलोमं च प्रशस्तमम्भः प्रयच्छति च ॥३॥
Sloka 3.—A rainbow which, being unbroken, bright
and glossy, thick and multi-coloured, touches the ground
at both ends, appears double and is behind persons,
conduces to weal and yields rain.
Some interpret द्विरुदितमनुलोमं as—of the two rainbows, if one
is in the north and the other in the south, it is प्रतिलोम i. e.,
contrary to each other, while, if they are in the same direction,
it is अनुलोम . But this interpretation in the light of Garga
seems to be wrong.