39:66
بَلِ ٱللَّهَ فَٱعْبُدْ وَكُن مِّنَ ٱلشَّـٰكِرِينَ ٦٦
Saheeh International
Rather, worship [only] Allah and be among the grateful.
Tafsir of "Ibn Kathir" (English)
Nay! But worship Allah, and be among the grateful.means, `you and those who follow you and believe in you should make your worship sincerely for Allah Alone, with no partner or associate.