Hadrat Abdullah Ibn Umar (r.a.) said: ‘The Messenger of Allah (saws) said, "Allah has prohibited you from taking an oath by your fathers. He who must take an oath, may do so by swearing in the Name of Allah or he should remain silent.''’
Related by Bukhari and Muslim. quoted from Riyad-us-Saliheen (Hadith # 1707)
It is absolutely and categorically prohibited and forbidden for a believer who sincerely believes in Allah and the Last Day to take an oath in the name of one’s father (or absolutely anything in creation)….for an oath can only be taken in the Blessed Name of Allah Subhanah, for He Alone is Truly a Witness to everything.
In another authentic narration the Messenger of Allah (saws) declared: ‘He who takes an oath by anyone or anything other than Allah, has indeed committed an act of ‘Kufr’ (disbelief) or ‘shirk’ (polytheism).’