2 verses have
“testigo”
in Edition Julio Cortes / Qaaf (The letter Qaaf)
50:21Cada uno vendrá acompañado de un conductor y de un testigo.
50:37Hay en ello, sí, una amonestación para quien tiene entendimiento, para quien aguza el oído y es testigo.
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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