Solomon's reign is recorded in 1 Kings 1:1-11 and 2 Chronicles 1:1-9. Three books — Proverbs, Ecclesiastes, and the Song of Solomon — are traditionally attributed to him.
Traditional attribution: Proverbs, Ecclesiastes, and the Song of Solomon are traditionally attributed to Solomon (Wikidata Q37085).
Key passages:
"Give therefore thy servant an understanding heart to judge thy people, that I may discern between good and bad: for who is able to judge this thy so great a people?" — 1 Kings 3:9
"Behold, I have done according to thy words: lo, I have given thee a wise and an understanding heart; so that there was none like thee before thee, neither after thee shall any arise like unto thee." — 1 Kings 3:12
"And God gave Solomon wisdom and understanding exceeding much, and largeness of heart, even as the sand that is on the sea shore." — 1 Kings 4:29
"The proverbs of Solomon the son of David, king of Israel;" — Proverbs 1:1
Read more in 1 Kings and the wisdom books attributed to him.