The Messenger of Allah [SAW] said: "Whoever seizes the wealth of a Muslim unlawfully by means of his (false) oath, Allah makes the Fire required for him, Paradise unlawful for him." A man said to him: "O Messenger of Allah, even if it is something small?" He said: "Even if it is a twig of an Arak tree." (Using translation from Nasāʾī 5419)
أَنَّهُ سَمِعَ أَبَا أُمَامَةَ بْنَ ثَعْلَبَةَ يَقُولُ كُنَّا عِنْدَ رَسُولِ اللهِ ﷺ فَقَالَ «مَنِ اقْتَطَعَ مَالَ امْرِئٍ مُسْلِمٍ بِيَمِينِهِ فَقَدْ أَوْجَبَ اللهُ لَهُ النَّارَ وَحَرَّمَ عَلَيْهِ الْجَنَّةَ» فَقَالَ رَجُلٌ وَإِنْ شَيْءٌ يَسِيرٌ يَا رَسُولَ اللهِ؟ فَقَالَ رَسُولُ اللهِ ﷺ «وَإِنْ قَضِيبًا مِنْ أَرَاكٍ»