As the number of believers increased and the cause of the Prophet was strengthened by the conversions of many powerful citizens, the Prophet's preaching alarmed the Quraish. Their power and prestige were at stake. They were the custodians of the idols which the Prophet had threatened to destroy; they were the ministers of the worship which he denounced; in fact their existence and living wholly depended upon the maintenance of the old institutions. The Prophet taught that in the sight of his Lord all humans were equal, the only distinction recognized among them being the weight of their piety.
Related Quran Ayaaths of this Hadith.
Surah 3 : Ayah 144Surah 2 : Ayah 4Surah 2 : Ayah 23Surah 2 : Ayah 80Surah 2 : Ayah 90Surah 2 : Ayah 93Surah 2 : Ayah 94Surah 2 : Ayah 97Surah 2 : Ayah 105Surah 2 : Ayah 108Surah 5 : Ayah 17Surah 5 : Ayah 48Surah 5 : Ayah 49Surah 3 : Ayah 12Surah 3 : Ayah 20Surah 3 : Ayah 31Surah 6 : Ayah 10Surah 6 : Ayah 11Surah 4 : Ayah 41"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