Abasa • BN-TAFSEER-IBN-E-KASEER
﴿ وَمَا يُدْرِيكَ لَعَلَّهُۥ يَزَّكَّىٰٓ ﴾
“Yet for all thou didst know, [O Muhammad,] he might perhaps have grown in purity,”
Please check ayah 80:16 for complete tafsir.