Sunan Abi Dawud, Book 2, Hadith 406 (USC-MSA) ⓘ
Khaythamah said: By the life of the sun is meant that you may find heat in it.
حَدَّثَنَا يُوسُفُ بْنُ مُوسَى، حَدَّثَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنْ خَيْثَمَةَ، قَالَ حَيَاتُهَا أَنْ تَجِدَ، حَرَّهَا .
also referenced under: Hadith 406 (DarusSalam) & Hadith 406 (Hasan)