1 verse has
“obligatory”
in Edition Clear Qur'an by Talal Itani / At-Tawba (The Repentance)
9:11But if they repent, and perform the prayers, and give the obligatory charity, then they are your brethren in faith. We detail the revelations for a people who know.
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Those who spend their wealth by night and day, privately and publicly, will receive their reward from their Lord. They have nothing to fear, nor shall they grieve.
The Holy Quran · Al-Baqara (The Cow) · 2:274