1 verse has
“estai”
in Edition Samir El-Hayek / Aal-i-Imraan (The Family of Imraan)
3:200Ó fiéis, perseverai, sede pacientes, estai sempre vigilantes e temei a Deus, para que prospereis.
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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