Ecclesiastes 4:11 Midrash

גַּ֛ם אִם־יִשְׁכְּב֥וּ שְׁנַ֖יִם וְחַ֣ם לָהֶ֑ם וּלְאֶחָ֖ד אֵ֥יךְ יֵחָֽם׃

Again, if two lie together, then they have warmth; but how can one be warm alone?

Read midrashic interpretation of Ecclesiastes 4:11: and classical rabbinic exegesis.