Quran 38:20 from Surah Saad on Divine Marvels.
وَشَدَدۡنَا مُلۡكَهُۥ وَءَاتَيۡنَٰهُ ٱلۡحِكۡمَةَ وَفَصۡلَ ٱلۡخِطَابِ
English translation: And We strengthened his kingdom and We gave him [the] wisdom and decisive speech
Transliteration: washadadna mul'kahu waataynahu al-hik'mata wafasla al-khitabi