One day Jamdagni rishi got miffed at the heat created by the Sun and wanted to punish Him. When the Sun found out what Jamadagni had in mind He came in disguise to see him.
He asked Jamadagni, how he intended on punishing the Sun, since He was always moving.
Jamadagni rishi replied, "there is a moment at noon, when I can see the Sun pausing for a moment, that is when I will shoot my arrows at Him."
The Sun revealed himself and asked for forgiveness for causing so much heat, however he claimed that it was essential for the lives on earth.
Instead, he suggested a solution and gave jamdagni rishi a pair of sandals and an umbrella. The sandals to protect his feet and the umbrella to protect his head.