Ibn Abbas continued: "Once more Abraham thought of visiting his family he had left (at Mecca), so he told his wife (Sarah) of his decision. He went and found Ishmael behind the Zam-zam well, mending his arrows. He said: 'O Ishmael, your Lord has ordered me to build a house for Him.' Ishmael said: 'Obey (the order of) your Lord.' Abraham said: 'Allah has also ordered me that you should help me therein.' Ishmael said: Then I will do so.' So both of them rose and Abraham started building (the Ka'ba) while Ishmael went on handing him the stones, and both of them were saying: "O our Lord ! Accept (this service) of us, verily, You are the AllHearer, the All-Knower."'. When the building became high and the old man (i.e. Abraham) could no longer lift the stones (to such a high position), he stood over the stone of AlMaqam and Ishmael carried on handing him the stones, and both of them were saying: "O our Lord ! Accept (this service) of us, verily, You are the All-Hearer, the All Knower." Surah 2: 127
Related Quran Ayaaths of this Hadith.
Surah 6 : Ayah 86 Surah 4 : Ayah 163 Surah 6 : Ayah 86 Surah 38 : Ayah 4 Surah 14 : Ayah 39 Surah 19 : Ayah 54 Surah 21 : Ayah 85"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