the Prophet sent a collector and he came to a man who brought him a slim, recently-weaned camel. The Prophet said: "We sent to Zakah collector of Allah and His Messenger, and so-and-so gave him a slim, recently-weaned camel. O Allah, do not bless him nor his camels!" News of that reached the man, so he came with a beautiful she-camel and said: "I repent to Allah and to His Prophet. " The Prophet said: "O Allah, bless him and his camels!" (Daif) (Using translation from Nasāʾī 2458)  

أَنَّ النَّبِيَّ ﷺ بَعَثَ سَاعِيًا فَأَتَى رَجُلًا فَآتَاهُ فَصِيلًا مَخْلُولًا فَقَالَ النَّبِيُّ ﷺ «بَعَثْنَا مُصَدِّقَ اللهِ وَرَسُولِهِ وَإِنَّ فُلَانًا أَعْطَاهُ فَصِيلًا مَخْلُولًا اللهُمَّ لَا تَبَارِكْ فِيهِ وَلَا فِي إِبِلِهِ» فَبَلَغَ ذَلِكَ الرَّجُلَ فَجَاءَ بِنَاقَةٍ فَذَكَرَ حَسَنًا قَالَ أَتُوبُ إِلَى اللهِ وَإِلَى نَبِيِّهِ ﷺ فَقَالَ النَّبِيُّ ﷺ «اللهُمَّ بَارِكْ فِيهِ وَفِي إِبِلِهِ»