Some Hadith

upon him) said, “Paradise has eight gates, and one of them is called Ar-Raiyan through which none will enter but those who observe fasting.” The Prophet (peace be upon him) also said, “If a person spends two different kinds of something (for Allah’s cause), he will be called from the gates of Paradise.”
Sahih Al-Bukhari – Book 54 Hadith 479

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Narrated Abdullah bin Amr: Allah’s Apostle said. “It is one of the greatest sins that a man should curse his parents.” It was asked (by the people), “O Allah’s Apostle! How does a man curse his parents?” The Prophet (peace be upon him) said, “The man abuses the father of another man and the latter abuses the father of the former and abuses his mother.”
Sahih Al-Bukhari – Book 73 Hadith 4

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Narrated Al Mughira: The Prophet (peace be upon him) said, “Allah has forbidden you (1) to be undutiful to your mothers (2) to withhold (what you should give) or (3) demand (what you do not deserve), and (4) to bury your daughters alive. And Allah has disliked that (A) you talk too much about others ( B), ask too many questions (in religion), or (C) waste your property.”
Sahih Al-Bukhari – Book 73 Hadith 6

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Narrated Abu Huraira: The Prophet (peace be upon him) said, “Avoid the seven great destructive sins.” They (the people) asked, “O Allah’s Apostle! What are they?” He said, “To join partners in worship with Allah; to practice sorcery; to kill the life which Allah has forbidden except for a just cause (according to Islamic law); to eat up usury (Riba), to eat up the property of an orphan; to give one’s back to the enemy and fleeing from the battlefield at the time of fighting and to accuse chaste women who never even think of anything touching chastity and are good believers.”
Sahih Al-Bukhari – Book 82 Hadith 840