What did the Prophet Muhammad (peace be upon him) teach about taking an oath containing the names of two Idols worshipped by the Pagans?
 Narrated Abu Huraira:                     Allah's Apostle said, "Whoever among you takes an oath wherein he says, 'By Al-Lat and Al-`Uzza,' names of two Idols worshipped by the Pagans, he should say, 'None has the right to be worshipped but Allah; And whoever says to his friend, 'Come, let me gamble with you ! He should give something in charity. " (See Hadith No. 645)