Al-Lail • BN-TAFSEER-IBN-E-KASEER
﴿ ٱلَّذِى يُؤْتِى مَالَهُۥ يَتَزَكَّىٰ ﴾
“he that spends his possessions [on others] so that he might grow in purity –”
Please check ayah 92:21 for complete tafsir.