"They have made their oaths a screen (for their hypocrisy)." (1) (63:2) (1): (Ch. 2) "An-Nifāq": (Hypocrisy is of two types, namely: A - Hypocrisy in Belief B - Hypocrisy in deeds and actions. )

Sahih al-Bukhari · Book 65 · Hadith 4901

حَدَّثَنَا آدَمُ بْنُ أَبِي إِيَاسٍ، حَدَّثَنَا إِسْرَائِيلُ، عَنْ أَبِي إِسْحَاقَ، عَنْ زَيْدِ بْنِ أَرْقَمَ ـ رضى الله عنه ـ قَالَ كُنْتُ مَعَ عَمِّي فَسَمِعْتُ عَبْدَ اللَّهِ بْنَ أُبَىٍّ ابْنَ سَلُولَ يَقُولُ لاَ تُنْفِقُوا عَلَى مَنْ عِنْدَ رَسُولِ اللَّهِ حَتَّى يَنْفَضُّوا‏.‏ وَقَالَ أَيْضًا لَئِنْ رَجَعْنَا إِلَى الْمَدِينَةِ لَيُخْرِجَنَّ الأَعَزُّ …

Narrated Zaid bin Arqam: I was with my uncle and I heard `Abdullah bin Ubai bin Salul, saying, "Don't spend on those who are with Allah's Messenger (ﷺ) that they may disperse and go away from him." He also said, "If we…