ßÊÇÈ ÇáÃÏÈ : Hadeeth No:5713 : Ibn 'Umar: that he found 'Umar bin Al-Khattab in a group of people and he was swearing by his father. So Allah's Apostle called them, saying, "Verily! Allah forbids you to swear by your fathers. If one has to take an oath, he should swear by Allah or otherwise keep quiet."...

ßÊÇÈ ÕÝÉ ÇáÕáÇÉ : Hadeeth No:748 : Abu Huraira: The Prophet said, "Say Amin" when the Imam says it and if the Amin of any one of you coincides with that of the angels then all his past sins will be forgiven." Ibn Shihab said, "Allah's Apostle used to Say "Amin." ...