Sura al-Zumar 39:18

ٱلَّذِينَ يَسْتَمِعُونَ ٱلْقَوْلَ فَيَتَّبِعُونَ أَحْسَنَهُۥٓ أُو۟لَٰٓئِكَ ٱلَّذِينَ هَدَىٰهُمُ ٱللَّـهُ وَأُو۟لَٰٓئِكَ هُمْ أُو۟لُوا۟ ٱلْأَلْبَٰبِ

lladhīna yastamiʿūna l-qawla fa-yattabiʿūna aḥsanahu ulāʾika lladhīna hadāhumu allāhu wa-ūlāʾika hum ūlū l-albābi

Those who listen to the Word, and follow the best (meaning) in it: those are the ones whom Allah has guided, and those are the ones endued with understanding.

Sura al-Zumar 39:55

وَٱتَّبِعُوٓا۟ أَحْسَنَ مَآ أُنزِلَ إِلَيْكُم مِّن رَّبِّكُم مِّن قَبْلِ أَن يَأْتِيَكُمُ ٱلْعَذَابُ بَغْتَةً وَأَنتُمْ لَا تَشْعُرُونَ

wa-ittabiʿū aḥsana mā unzila ilaykum min rrabbikum min qabli an yaʾtiyakumu l-ʿadhābu baghtatan wa-antum lā tashʿurūna

"And follow the best of (the courses) revealed to you from your Lord, before the Penalty comes on you - of a sudden while ye perceive not!-