Matsyapurana 67.24

67.24

adhikāḥ padmarāgāḥ syuḥ kapilāṃ ca suśobhanām
prayacchecca niśāṃ patye candrasūryoparāgayoḥ //

At the time of a solar eclipse, the mantras mentioned above should be recited by substituting the word Sûrya (the Sun) in the place of Chandra or Moon. The additional gift in the case of solar eclipse must consist of rubies. A beautiful cow should be given away at the time of any eclipse (either solar or lunar), in honour of the moon.—22-23.