﴿ إِذْ يُرِيكَهُمُ ٱللَّهُ فِى مَنَامِكَ قَلِيلًۭا ۖ وَلَوْ أَرَىٰكَهُمْ كَثِيرًۭا لَّفَشِلْتُمْ وَلَتَنَٰزَعْتُمْ فِى ٱلْأَمْرِ وَلَٰكِنَّ ٱللَّهَ سَلَّمَ ۗ إِنَّهُۥ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ ﴾

“Lo! God showed them to thee in a dream as few: for, had He shown them to you as many, you would surely have lost heart, and would surely have disagreed with one another about what to do. But God saved [you from this]: verily, He has full knowledge of what is the hearts [of men].”

Please check ayah 8:44 for complete tafsir.