Saad 44

وَخُذْ بِيَدِكَ ضِغْثًا فَٱضْرِب بِّهِۦ وَلَا تَحْنَثْ إِنَّا وَجَدْنَٰهُ صَابِرًا نِّعْمَ ٱلْعَبْدُ إِنَّهُۥٓ أَوَّابٌ ﴿٤٤﴾

Wakhuth biyadika dighthan faidrib bihi wala tahnath inna wajadnahu sabiran niAAma alAAabdu innahu awwabun

"And take in your hand a bundle of thin grass and strike therewith (your wife), and break not your oath. Truly! We found him patient. How excellent (a) slave! Verily, he was ever oft-returning in repentance (to Us)! The Noble Quran