ßÊÇÈ ÇáÃíãÇä æÇáäÐæÑ : Hadeeth No:6269 : 'Abdullah bin 'Umar: The Prophet forbade the making of vows and said, "It (a vow) does not prevent anything (that has to take place), but the property of a miser is spent (taken out) with it."...

ßÊÇÈ ÇáÌåÇÏ æÇáÓíÑ : Hadeeth No:2828 : Jabir bin 'Abdullah: The Prophet said, "Who is ready to kill Ka'b bin Al-Ashraf who has really hurt Allah and His Apostle?" Muhammad bin Maslama said, "O Allah's Apostle! Do you like me to kill him?" He replied in the affirmative. So, Muhammad bin Maslama went to him (i.e. Ka'b) and said, "Th...