Evil consequences of false oaths
Hazrat Imam Ja’far as-Sadiq (a.s.) says,
“One who swears falsely becomes poor within forty nights” (means forty days).
(al-KÄfi)
Many traditions of similar connotations are available. The same Imam (a.s.) has also said:
“The false oath that takes one to the fire is the one which is taken to usurp the right of a Muslim or to usurp his property.”
And Imam Ja’far as-Sadiq (a.s.) also remarks,
“When a person says, “Allah knows!” when in fact he is speaking a lie; then Allah tells him, ‘Didn’t you find anyone other than Me to ascribe the falsehood to?’
(al-KÄfi)
The Holy Imam (a.s.) also says:
“When a person says ‘Allah knows’ and the fact is that Allah knows contrary (to what he alludes), the heavens shudder due to the Might and Divine anger.”