The triliteral root dāl bā rā (د ب ر) occurs 44 times in the Quran, in eight derived forms:. four times as the form II verb yudabbiru (يُدَبِّرُ); four times as the form IV verb adbara (أَدْبَرَ); four times as the form V verb yatadabbaru (يَتَدَبَّرُ); four times as the noun dābir (دَابِر); 18 times as the noun dubur (دُبُر)