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حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ ، حَدَّثَنَا إِسْمَاعِيلُ ابْنُ عُلَيَّةَ ، عَنْ خَالِدٍ الْحَذَّاءِ ، عَنْ أَبِي قِلاَبَةَ ، عَنْ أَبِي الأَشْعَثِ ، عَنْ شَدَّادِ بْنِ أَوْسٍ ، قَالَ: ثِنْتَانِ حَفِظْتُهُمَا عَنْ رَسُولِ اللهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، قَالَ: إِنَّ اللَّهَ كَتَبَ الإِحْسَانَ عَلَى كُلِّ شَيْءٍ ، فَإِذَا قَتَلْتُمْ فَأَحْسِنُوا الْقِتْلَةَ ، وَإِذَا ذَبَحْتُمْ فَأَحْسِنُوا الذَّبْحَ ، وَلْيُحِدَّ أَحَدُكُمْ شَفْرَتَهُ ، فَلْيُرِحْ ذَبِيحَتَهُ.
It was narrated that Shaddad bin Aws said: "There are two things that I memorized from the Messenger of Allah (s.a.w). He (s.a.w) said: 'Allah has prescribed proficiency in all things, so if you kill, kill well, and if you slaughter, slaughter well. Let one of you sharpen his blade and spare suffering to the animal he slaughters."'
"When a person dies, his works end, except for three: ongoing charity, knowledge that is benefited from, and a righteous child who prays for him."
Prophet Mohammed (PBUH)
"The best of what a man leaves behind are three: a righteous child who supplicates for him, ongoing charity the reward of which reaches him, and knowledge that is acted upon after him."
Sunan Ibn Mājah
"Every day two angels come down from Heaven and one of them says, 'O Allah! Compensate every person who spends in Your Cause,' and the other (angel) says, 'O Allah! Destroy every miser.'"
Sahih Bukhari