Let us seek the answer of this question. The meaning of the word Ghani(غنى / غَنِىٌّ ) is opulence; abundance; wealth; affluence . The state of being ostentatiously rich.
قَوْلٌ مَّعْرُوْفٌ وَّمَغْفِرَةٌ خَيْرٌ مِّنْ صَدَقَةٍ يَّتْبَعُهَآ اَذًى ۭ وَاللّٰهُ غَنِىٌّ حَلِيْمٌ
Answer : The first placement of the word غَنِىٌّ is in Verse No. 263 , Surah No.02 : Kind words and forgiveness are better than charity followed by injury. And Allah is Self-Sufficient, Most Forbearing.
So those who use kind words and forgive are the richest person in the entire universe.