When a wife does not obey her husband, she presumably becomes rebellious. The Koran instructs husbands to then beat rebellious wives.
Additionally, the Koran says suspecting rebellion from the wife warrants wife beatings:
Koran 4:34 - Men are the managers of the affairs of women for that God has preferred in bounty one of them over another, and for that they have expended of their property. Righteous women are therefore obedient, guarding the secret for God's guarding. And those you fear may be rebellious admonish; banish them to their couches, and beat them. If they then obey you, look not for any way against them; God is All-high, All-great.
So, the Koran says to beat wives husbands suspect of being rebellious.
However, what happens if the husband suspects his wife is having an affair? According to the Koran, he should be able to beat her. But what if she wasn't actually having an affair?
Her pleas of innocence would fall on deaf ears as the husband pummels his wife. Essentially, wives have no escape from a beating from any suspicious husband. An unconvinced husband guarantees beatings.
The onus is on wives to prove to their husbands they aren't having an affair or doing anything else the husband would consider disobedient.
What do wives need to do to ensure their husbands do not suspect rebellion?
What constitutes rebellion so husbands know when to beat their wives?