And judge, [O Muhammad], between them by what Allah has revealed and do not follow their inclinations and beware of them, lest they tempt you away from some of what Allah has revealed to you. And if they turn away - then know that Allah only intends to afflict them with some of their [own] sins. And indeed, many among the people are defiantly disobedient.
English Transliteration
Waani ohkum baynahum bima anzala Allahu wala tattabiAA ahwaahum waihtharhum an yaftinooka AAan baAAdi ma anzala Allahu ilayka fain tawallaw faiAAlam annama yureedu Allahu an yuseebahum bibaAAdi thunoobihim wainna katheeran mina alnnasi lafasiqoona
Tafsir of Verse 49
And judge between them according to what God has sent down, and do not follow their caprices, and beware of them lest they tempt thee away from any of what God has sent down to thee. But if they turn their backs, know that God desires only to smite them for some sin they have committed; surely, many men are ungodly.
And this (He commands): Judge thou between them by what Allah hath revealed, and follow not their vain desires, but beware of them lest they beguile thee from any of that (teaching) which Allah hath sent down to thee. And if they turn away, be assured that for some of their crime it is Allah's purpose to punish them. And truly most men are rebellious.