Read Quran : Surah Al Maeda Ayat 73 : disbelievers are those who said: "Allâh is the third of the three (in a Trinity)." But there is no llâh (god)

Al-Maeda

Surely, disbelievers are those who said: "Allâh is the third of the three (in a Trinity)." But there is no llâh (god) (none who has the right to be worshipped) but One Ilâh (God -Allâh). And if they cease not from what they say, verily, a painful torment will befall on the disbelievers among them (73)

Al-Maeda

They surely disbelieve who say: Lo! Allah is the third of three; when there is no God save the One God. If they desist not from so saying a painful doom will fall on those of them who disbelieve. (73)

Al-Maeda

They disbelieve who say: Allah is one of three in a Trinity: for there is no god except One God. If they desist not from their word (of blasphemy), verily a grievous penalty will befall the blasphemers among them. (73)

Al-Maeda

Demi sesungguhnya telah kafirlah orang-orang yang berkata: Bahawasanya Allah ialah salah satu dari tiga tuhan. Padahal tiada Tuhan (yang berhak disembah) melainkan Tuhan Yang Maha Esa dan jika mereka tidak berhenti dari apa yang mereka katakan itu, sudah tentu orang-orang yang kafir dari antara mereka akan dikenakan azab seksa yang tidak terperi sakitnya. (73)