Allah (Subhanahu wa-ta'ala) says in Quran - “And your Lord has decreed that you worship none but Him and that you be dutiful to your parents. If one of them or both of them attain old age in your life, say not to them a word of disrespect, nor shout at them but address them in terms of honour. And lower unto them the wing of submission and humility through mercy, and say: "My Lord! Bestow on them ( parents) Your Mercy as they did bring me up when I was young." [Al Quran , Surah Al-Isra (17), Verse 23-24]
Abu Abdur-Rahman As-Sulami narrated from Abu Darda (may Allah be pleased with him) that he heard the Messenger of Allah, Mohammed (peace be upon him) saying - “The father is the middle gate to Paradise. So if you wish, then neglect that door, or protect it”. [Jami At-Tirmidhi, Vol. 4, Book 1, Hadith 1900 (Hasan)]
Abdullah Ibn Umar (may Allah be pleased with him): The Prophet Mohammed (peace be upon him) said - "The pleasure of the Lord lies in the pleasure of the father (or parent). The anger of the Lord lies in the anger of the father (or parent)". [Jami At-Tirmidhi, Vol 4, Book 1, Hadith 1899 (Hasan)]
Narrated Anas (may Allah be pleased with him): The Prophet Mohammed (peace be upon him) was asked about the great sins. He (peace be upon him) said - "They are, (1) To join others in worship with Allah. (2) To be undutiful to one's parents. (3) To kill a person, (4) and to give a false witness (These are the great sins)”. [Sahih Bukhari, Vol 3, Book 48, No. 821]
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