ENOfficial
Sa'd reported: This verse was revealed in relation to six persons and I and Ibn Mas'ud were amongst them. The polytheists said to him (the Holy Prophet): Do not keep such persons near you. It was upon this that (this verse was revealed):" Drive not away those who call upon their Lord morning and evening desiring only His pleasure" (vi. 52).
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ، عَنْ سُفْيَانَ، عَنِ الْمِقْدَامِ بْنِ شُرَيْحٍ، عَنْ أَبِيهِ، عَنْ سَعْدٍ، فِيَّ نَزَلَتْ { وَلاَ تَطْرُدِ الَّذِينَ يَدْعُونَ رَبَّهُمْ بِالْغَدَاةِ وَالْعَشِيِّ} قَالَ نَزَلَتْ فِي سِتَّةٍ أَنَا وَابْنُ مَسْعُودٍ مِنْهُمْ وَكَانَ الْمُشْرِكُونَ قَالُوا لَهُ تُدْنِي هَؤُلاَءِ .
sunnah.com