ص ف رṣ-f-r
(س) صَفِرَ يَصْفَرُ صُفْرَةًṣafira yaṣfaru ṣufratan: to be yellow.
اَصْفَرُaṣfaru (adjective on the pattern of afʿal used for colours and defects; feminine صَفْرَآءُṣafrāʾu, pl. صُفْرٌṣufr): yellow. ﴿صَفْرَآءُ فَاقِعٌ لَّوْنُهَا﴾ (Al-Baqarah 2:69); ﴿كَاَنَّهُۥ جِمٰلَتٌ صُفْرٌ﴾ (Al-Mursalāt 77:33) Form ifʿilāl اِصْفَرَّ يَصْفَرُّ اِصْفِرَارًاiṣfarra yaṣfarru iṣfirāran: to turn yellow; مُصْفَرٌّmuṣfarr (active participle, ism fāʿil): turning yellow. ﴿ثُمَّ يَهِيْجُ فَتَرٰىهُ مُصْفَرًّا﴾ (Az-Zumar 39:21); ﴿فَرَاَوْهُ مُصْفَرًّا﴾ (Ar-Rūm 30:51); ﴿ثُمَّ يَهِيْجُ فَتَرٰىهُ مُصْفَرًّا﴾ (Al-Ḥadīd 57:20) This root occurs 5 times in the Quran.