Deliberate falsehood and perjury

۞ أَلَمْ تَرَ إِلَى ٱلَّذِينَ تَوَلَّوْا۟ قَوْمًا غَضِبَ ٱللَّهُ عَلَيْهِم مَّا هُم مِّنكُمْ وَلَا مِنْهُمْ وَيَحْلِفُونَ عَلَى ٱلْكَذِبِ وَهُمْ يَعْلَمُونَ

Have you not considered those who make allies of a people with whom Allāh has become angry? They are neither of you nor of them, and they swear to untruth while they know [they are lying].